The damn Actuonix linear actuators with potentiometer feedback don't even come with limit switches. I hit the limit for a just a second and the entire housing started warping. Damnedest thing I have ever seen. Glad you guys designed it right.
Thanks for the video. You both explained all the questions I had with perfect detail; opening the unit itself and displaying the inner working of the actuator was a bonus.!
I fail to understand why the grey bearded guru doesn't talk a lot in this video, he really deserves it. I miss more of his technical explanations about the other system. I would love a more complete and technical video of both systems (and even more) work 1:1 comparisons (doing exactly the same task, same conditions, etc)
Looking at one of these linear servos to convert a riding mower into a RC mower. Gonna need one for steering, and a light duty one for actuating the hydrostatic transmission control lever. It's gonna be sweet!
I bought an actuator for my boat trim motor and it lasted about 3 weeks before it died. I made sure it was water proof and then I also sprayed it with water proofing. So that is one thing you forget to mention. It had much more dynamic and static load rating than I needed and was the correct voltage. It was slow but I would rather slow than not enough lift. Anyway, I would be interested to know what went wrong. The company had a 30 day return but by the time I was able to install I really only got about 3 weeks out of it and maybe had to lift the motor 8 times during that period. Can you comment on what may have/could have gone wrong ?
Hey guys just stumbled upon your channel after trying to find a solution to a problem im having. I have little knowledge of anything to do with servos and could really use a hand figuring out what i need to do what i need to do. Im trying to make an exoskeletal arm brace/ elbow joint for my mum who suffered from arthritis and had many failed attempts at replacing the joint. She now has no elbow or bone 8 inches either side of where the elbow should be. Ive figured out the rigging now im stuck on how to wire up an actuator to extend and hold in place with one button and retract and hold in place when released with another. This is a long shot and im sure youre very busy but any push in the right direction would be amazing! Thanks for your time. Karl :)
A couple questions! What is the noise rating on the servo? Also, if I were to open the servo and move the limit switch on the fully-extended side (desolder, drill, solder), would the servo have a correctly-functioning shortened range? I'm looking to do ~85 lbs with a ~1.5" throw and it would be excellent to have the safety in hardware, not software.
I am looking for some ideas as to how to build an old school arcade driving cabinet like Out Run where with the turn of the wheel, the base would move. I am thinking about putting an actuator or servo, I think 4 will do the job. But what I don't know is where to start or look for. Would something like these work at high speed sensitivity and would they handle the weight? I originally was looking at hydraulics, but outside of weight, they would seem slow. Suggestions?
Thank you for reaching out to us. If you could please send additional specifications to our technical department they would be happy to help with some recommendations at tech@servocity.com
Great video, area there any problems that you are aware of regarding installing them in a hot humid greenhouse for ridge and side vent opening? Thank you.
Very good demo.I like the contrast between you two, I actually learned a lot from two perspectives, that was very thorough and satisfying considering my obsession with finding out everything tech,especially electric motors I will subscribe and like. I love the way you get down to business, no extra B.S. I’m a K.I.S.S. fan myself, keep it simple is usually my aspect on things, I also enjoyed the disassembly, appreciate the convinces you 2 have provided and fantastic presentation!
Hi David, there are various ways you could go about it. For example you could use a limit switch ( www.servocity.com/electronics/components/switches/limit-switches ) that is physically engaged to turn on the light. Or you if you are using something like an Arduino or Raspberry Pi with a servo hat you could use a linear servo ( www.servocity.com/servos/linear-servos ) and a PWM switch ( www.servocity.com/electronics/components/switches/pwm-switches ) and send two PWM signals, one to control the linear servo and one to turn on the light via the PWM switch. You could also use a PWM switch with a Y-harness and linear servo to run them both off of the same PWM signal (like from an RC receiver or Arduino, Raspbery Pi etc) but the light would turn on the entire time the servo is extending and not just at full extension. Let us know if you have any other questions tech@servocity.com.
Hi I need a linear actuator with 6000N that can adjust limit. I don’t wanna burn it out and I don’t wanna spend a ton of money! Anyone got ideas ? Off Amazon maybe?
Great video. My question is, can I remove the cover of my "Windy City" actuator and reposition either, or both of the limit switches to stop the extension, or retraction, at a particular position? Thank you.
Hello! Great video. Is it possible to create an automatic reciprocating (preferably adjustable) movement with a linear actuator (without having to turn a switch back and forth) and if so what equipment would one need? Thank you so much 😊
It sounds like you're after a linear servo of some sort, likely combined with a microcontroller to send it position commands such as an Ardunio (www.servocity.com/pololu-a-star-32u4-prime-sv/) To interpret the signals from a solar tracking sensor or something of the like.
I am ready to buy the linear servo for an autonomous boat installation using the PIXHAWK Flight/ navagation controller A- How do I go about connecting the pixhawk to the linear servo?
You guys are great together, Cracked me when you pulled out the linear servo how Jason was looking at you thinking "why is this dude trying to one up me man"
Thanks for a great instructional video. I am going to use actuators to control my boats speed and shift her transmission. Do you know of any better suited for the marine environment?
While there are marine grade linear actuators on the market, we do not offer them or have a suggested source that we know to send you to unfortunately. Feel free to reach out to our Tech Team should you have any other questions tech@servocity.com.
Hi, I have question, I have got the Linear 12 V -DC, 300N, 50mm stroke length the same as Jason tested. I connect to Adaptor 500 mA, but does not work is it because I need more Ampere for 12 v dc adaptor?
What a I do to stop my linear actuator from whining when it runs? Very disappointed with the noise from this 12 volt device. BTW, changing the angle of the actuator, you can change the speed of what you’re moving and range of your movement.
For my application I need 2, of the 2" Stroke 115 lb Thrust Heavy Duty Linear Actuator, I wanted to know if I could use a, "Thrustmaster USB Joystick (PC)", or which one do you recommend. I don't understand much. I have seen your video. Thanks Raffaele
That was an awesome demo guys..I have a question..I am trying to build a scale model of an excavator using the hydraulic principle with syringes.these motors act as Pistons so I should be able to use them instead right,I want to know what torque do these motors have cause I want my excavator to dig and lift just like the real thing.are they expensive to buy and could you pls do a demo on how to convert it to remote control..tnx guys
You can certainly use linear actuators or linear servos in place of hydraulics if the speed, thrust, stroke length and overall size fit your model. Since we’re quantifying a linear force they are rated in pounds rather than a torque measurement. The amount of weight it can lift will depend on the placement of the actuator in your assembly. Prices vary based on what selection you make; we have HD linear servos which are the most plug-and-play solution for r/c. We offer HD linear actuators that are less expensive but more intensive to hook up to R/C (require a motor controller that can convert the PWM signal to a voltage that would get sent on to the motor). and SD linear actuators which are the same as the smaller ‘HD’ linear actuators but beefier for more industrial applications. The video covers how to connect a linear servo or linear actuator to a servo controller. An R/C transmitter and receiver is just a wireless servo controller so it’ll connect the same way. Please let us know if you have any additional questions tech@servocity.com
Super!!!tnx for the prompt reply!! Another question..how does the boom of a crane extend..do they all have multistage cylinders or are they also equipped with linear actuators within each boom extension? And i.would really appreciate it if u could do a demo on how the excavotor rotates 360degs and still powers its tracks without its wirings and hydraulics getting twisted in the slew ring.i have looked online but not really satusfued with info or the lack of detail given. Cheers bros!!
Here’s a link to a brief explanation of how a crane boom extends: answers.yahoo.com/question/index?qid=20081125153736AAiN8mW. I would have to do more research on an excavator before commenting on the rotating base; sorry I couldn’t be more assistance in that department. Let us know if you have any other questions tech@servocity.com. Thank you
i, I have an INCA TV lift with a tubular motor. We lost the remote, and lift got stuck in up position. Any advice how to bring it down? Any ideas or how to reverse the motor movement? Highly appreciated. Thanks for sharing awesome ideas.
Hello! That sounds much outside the realm of our technical support. If you'd like you can send our team an email and see if they can help you out. But no guarantees they will be able to assist troubleshooting other company's products. tech@servocity.com
I am looking for a mechanical device that creates more force in one direction than the return stroke. to shake gold particles along a shaker table. if the force is equal = no movement gained. any ideas.
Awesome vid...does the amp of battery effect the actuator? Asking because I plan to install 2 linear actuators in my truck and debating if I should tap off the truck battery or off separate battery. Thanks
Thanks, Benjamin. If you are running linear actuators, you can tie them into your vehicle battery without a problem. The motor in an actuator won't be bothered by the fluctuation in voltage due to the alternator. More care would need to be taken if a micro-controller were in the equation. Feel free to email us should you have any other questions tech@servocity.com.
Nice video. Very helpful indeed. I have been going through some linear actuator sites, they mention usage rate or duty cycle like 20% in their specifications, what does this mean?? Could anyone explain. I am looking for a linear actuator , 80MM/sec speed, with Hall effect encoder for position feedback. The actuator would be active every 2 minutes, with rest periods of 2-5 minutes. Will this type of operation affect the life of the motor ??
Thank you so much for the video..its very informative.. I had coded a program to set a timer to count the forward extension and reverse retraction of the actuator using 16f877a and to display the time in LCD.
Great review. I have a question. If you stop it in the middle before it hit the limit switch and keep for a few hours does it use any electricity and drain the battery?
The current draw will be considerably less given the motor is going to be at idle but it will continue to draw from your battery until it's turned off of the battery is discharged. Let us know if you have any other questions tech@servocity.com.
Hey, what would I need in order to be able to control force, so let's say it's some kind of actuator that can pull max force of 100lbs but if I set it half way then I can still pull the full range of actuator range but it would be 50 lbs, quarter setting 25lbs, ect.??? So like a shock absorber but with on the fly resistance control?
I have a few questions about the linear servo. I would like to do position control what would I need for this? Just a PWM Signal? Also this has a Yellow, Black and Red wire which is which?
Yes, a PWM signal will tell the linear servo exactly what position it needs to be at (just like a normal servo). On a servo lead the Red wire is + the black wire is - and the yellow wire is signal.
Very useful video.because of the situation I will put it,sometimes it will work manual,so the power sometimes will be from the bracket to servo motor.Can it move?Will it may do a problem to the servo motor?
Hi, thanks a lot for your interesting video; I just have a question if you permet Does the linear actuator contain a limit switch that stop it even if we're giving an order to the motor to move ( forward and backward) ? THANKS :)
Hi Parish, yes, that's one way to make a linear servo. Keep in mind that normal threaded rod is not meant for creating linear motion but for fastening. The threads of a lead screw are cut much smoother and more consistent to create linear motion while minimizing friction. Please let us know if you have any other questions tech@servocity.com. Thank you
You will need to consider the IP rating of an actuator in such an application. Most of our actuators are IP54. While it depends how you use your tractor, I would suggest looking for IP67 or higher. Feel free to reach out should you have any other questions tech@servocity.com.
I want to use these motors for my robotic arm project.But my doubt is whether these motors are able to hold the weight of robotic arm when not powered or are at halt at a certain point .
Hi Saksham, the HD series actuators are extremely difficult to backdrive. It depends on your setup, but I would highly doubt that it will cause the actuators to move when powered down. Let us know should you have any other questions tech@servocity.com.
If the actuator you choose pulls less than 1 amp under load then it may work. Some trickle chargers may have circuitry that keeps them from supplying voltage til they receive a certain amount of voltage from the battery they are connected to. To check your trickle charger, plug it into the wall, connect it to a multi-meter and see if it's supplying a voltage. Please feel free to reach out to our technical team should you have any further questions at Tech@ServoCity.com.
@@ServoCity Interestingly, a multi-meter does show voltage on my trickle charges But the linear actuator still won't work with any of them - must be some sort of circuitry in the charger to prevent this type of use - so I am scouring my supply of old AC-DC chargers from old phones and rechargeable tools to see if I have anything in the 12V 1 amp range
do you have a video on how to make an app for an iphone or any phone to be able to control an actuator? like having the actuator connected through wifi to be able to control it from your phone from say another state? thanks in advance!
I've notice some linear actuator move super fast and smooth. They are almost silent. Are these powered by electric motors and a threaded shaft. The way they operation almost seems like they are powered magnetically. What are these linear actuators called?
It's hard to say for sure without knowing the actuator models you are looking into, they could be magnetic. However, there are also pneumatic cylinders that can be very fast, or hydraulics. If you still have questions please feel free to email tech@servocity.com and provide a link if possible for our team to look into further.
If your still around I would like to ask a question. I have an actuator that has stopped working (extending and retracting) and need to raise (retract) the shaft to its shortest length. What would be the simplest way to do this manually, if possible?
It depends on the design of your actuator, but if you can access the lead screw driving the piston, just rotate the lead screw manually (assuming it will still turn) to manually extend/retract. Feel free to contact us should you have any other questions tech@servocity.com.
hello, excellent video !!! Do you know if the linear servos or the linear actuators would have the necessary force to be able to step on the clutch of a mechanical car? If so, please recommend one. I am disabled, I appreciate your response.
Glad you found our video helpful, Braulio. Yes, a linear actuator or linear servo is capable of actuating the clutch on a vehicle. There are a lot of variables involved such as the position of the actuator in relation to the fulcrum, the type of clutch (mechanical, hydraulic, etc.), the pressure of the clutch, rated force of the actuator, etc. Please contact us should you have any additional questions tech@servocity.com, we'd be glad to help.
In terms of controlling the analog potentiometer, do you have any equipment on your website or alternate suggestions which connects to a PC, allowing one to set the actuator position by computer? Thanks guys!
At this time we do not sell any products which allow you to read an analog signal (such as from a potentiometer) from an PC. That being said you might take a look at microcomputers as a means of doing this depending on your project requirements. Please let us know if you have any additional questions tech@servocity.com
Is there a servo or actuator that is big enough to reach 8-10 feet? Or something that can reach close to that height? Working on a project for wireless surveys and need something like this to add to a pi
There are some very large linear actuators on the market, but I doubt you'll want to tote something of that scale around given the weight that is likely to be associated. If you take on building something for your application you might get some inspiration from an extension ladder; pull the rope and it extends out. You could use a motor to reel in the rope or cable that you use to drive your assembly. Feel free to email our Tech Team should you have any other questions tech@servocity.com.
What about synchronizing 4 servos for a 4 DOF platform sitting on a ball & cup shaft holding all the weight of the simulator? I am building a full size 767 coc
As long as the loads on the linear servos are appropriate, it's possible to do. If they all need to work in unison just send the same PWM signal to them and they'll respond the same. If they need to function independently then you'll want to run them on separate channels and make sure they're not working against one-another. Feel free to reach out to our Tech Team should you have any additional questions tech@servocity.com.
I wanted to know if it is possible to connect a dual motor controller to a computer, so that the speed and position may be controlled by using a software.
If you remove power from an actuator the motor driving it has no voltage going to it. The motor will stop and therefore the actuator will stay in the position it was in when power was removed.
My question is I need to wire a toggle switch to a linear actuator that came from the treadmill it's AC every video or instruction I find is for a DC linear actuator what kind of DP DT toggle switch what I need to use to operate forward and reverse for a 120 volt incline motor
I'd double check whether the motor is in-fact an AC motor. Even though you plug your treadmill into AC power it's not a given that everything it runs runs on AC. There may be a power inverter built in which changes the AC input to a DC output. If you do find that it's AC, reversing polarity can be done by reversing the polarity of the starter winding. Please let us know should you have any other questions tech@servocity.com.
Hi, I'm thinking of using the Linear Servo (similar to the one Jason used in this video) to drive my syringe pump. I am quite clueless on this and trying to find the right controller and battery. Which controller was used in this video? And what was the ampere hour draw of the battery used in the setup on the video (I would like to know what level of the ampH battery to buy)? Thanks
Hi Angelique, we're happy to help answer your questions. The linear servos will run on any type of servo controller able to operate a hobby servo. The Actobotics Dual Servo Controller (www.servocity.com/actoboticsr-servo-controller-w-enclosure) was used to operate the linear servo in the video (reference 6:30). The battery was just a lawn mower battery so that the power source would be quickly recognizable by viewers. Any 12V source will be fine so long as it can provide enough current to operate your linear servo (more applicable when selecting the proper power supply that plugs into the wall). The capacity of the battery will depend on the desired run-time and the current draw from the linear servo will depend on the load and frequency of movement. If you have any other questions feel free to let us know! tech@servocity.com or 620.221.0123
So I may or may not be planning on using this to gimbal a rocket nozzle… Do you know anything similar that can open and close without having to manually change it? I’m not a professional at electronics lol I think the simplest way would be an automated modification of the system shown at 3:20
Hello, If I'm understanding correctly, you want a system to continuously run in and out? If so: I think the easiest option would be the combination of a motor controller, an Arduino, and a Linear Actuator. The linear actuator has a pot that communicates the position of the actuator. The Arduino can read that pot, and control a motor controller. Some simple code could tell the motor controller to run the actuator in one direction, or the other depending on the current position of the actuator.
Hi. I was considering to use a linear actuator to change the tilt angle of a structure holding solar panels. Overall, around 200kg. Would this option vaild to keep the structure to a certain angle for longer periods? Or the weight would push it back? Thanks
Hello thank you for reaching out to us. Please email our technical team at Tech@ServoCity.com with your project details and they would be more than happy to help you.
The output force can be varied by changing the voltage or limiting the current supplied to the motor. If you want to have even more control there are force sensors available that could be used in conjunction with a motor controller as a closed loop system. Please let us know if you have any other questions tech@servocity.com
once it hits the end switch and you disconnect the power, what happens if you try to compress the rod back in... trying to automate a mechanical button and i need the rod to be extended for longer periodes of time while being under the force that is trying to push the rod back in.
It can support a pretty large amount of load without backdriving (turning backwards under power), how much load are you trying to hold and what speed actuator?
I have a 12 volt 6inch stroke actuator that stops working after I run it backwards and forwards 2 inches about 3 times. I have to wait about 20 minutes it will start working again. why does it stop working after short period of operation? How can I get it to work on and off over long durations?
We'd be glad to assist. You can contact our Tech Team directly at tech@servocity.com 620.221.0123. Can you provide the p/n on your invoice? What are you running the actuator with? Power Source? Thank you
How do I make it automatically move in and out ? With some type of optical eye, like a sliding door, when someone is approaching it, and it opens for a min and closes automatically.
Hello Tim. Please check out our Apparition Apparatus project on Instructables (www.instructables.com/id/Aberration-Apparatus-Halloween-Prank/ ). It should at least get you pretty close. If instead of sending a PWM signal to a transistor to drive a motor, you sent a PWM signal to a linear servo you could do what you want. Feel free to reach out to our Tech Team at tech@servocity.com should you have any other questions.
Hello Guys, Great video, I would like to use a Linear product to replace the old electronic window regulator motor to actuate the flaps. Can you please tell me what I need to install a gage indicating servo position (Up, 1/2, full) or (0, 15, 30) This is in my very small homebuilt experimental aircraft. thanks
While we do not condone using our products in high-risk applications such as this, I can help you with the question. The gauge just needs to read resistance from the potentiometer if you're using a linear actuator. This will be an accurate form of feedback. Another option would be to use a linear servo and just have a read-out of the PWM signal being sent. It's not a direct form of feedback as the linear servo doesn't send data back to the controller but you could assume that it's in a given position based on the signal sent. This second option would only be for less mission-critical applications given you are assuming the linear servo reached its target position as opposed to reading the actual current position like in the first option.
Hi. We were looking for such solution but we need to install it in Hazardous area, can you recommend any solution which we might consider explosion proof.
Hi Rashid, feel free to contact our Tech Team will your product specifications and they will be glad to help try and answer any questions. tech@servocity.com
i would like to use one of these to lift and lower my JD 44 inch snowblower on my x 300 Lawn tractor,will the cold affect the function? slow or stop it from working?
The cold should have no affect short of edge cases like if water somehow got inside in which case freezing temperatures would expand it as it turns to ice which may cause damage. Given their IP ratings this is unlikely. You can check the IP rating of the one you are interested in and look up the meaning with this chart www.servocity.com/glossary/#ingress-protection
Is there any way we can get benefits of servo actuator in linear actuators with some simple additions or changes.Secondly what's cost difference in general? What's the max speed force and stopping accuracy of each of them?
You can create a linear servo on your own using a linear actuator and a motor controller that has positioning feedback. Cost is dependent on what components you select for your project. Speed is dependent on the ratio you use and accuracy is going to come down to the stroke length of the actuator (as that will somewhat determine the resolution from the potentiometer) and the circuit board you choose to drive it. Email us at tech@servocity.com if you have any other questions and we'll assist you.
@@ServoCity thank you for elaborate reply.Readon being as a designer one tends to over design by using servos thereby increasing overall cost Thank you providing your contact email.
good info and good video. Now if I wanted the servo or actuator to just keep going in and out on its own but be able to control the speed how would that be done. To add another option if I wanted the auto function (the in and out on it own) with speed control then switch it to be able to control position. how is that magic done? any info you have or if you can point me in a direction. please.
Hi Darrell, sometimes a rotating assembly (think crank, rods, pistons in a car engine) is a preferred setup for linear motion that runs continually. This will keep from having to ask the motor to change directions over and over so your efficiency can potentially be better. If you want to use the actuator I'm sure there are many ways to do it electronically - one of those ways would be to slightly rewire the limits and include a latching relay that would allow it to change direction when either limit is contacted. If it's a linear servo just have a controller with a program to tell the servo to go in and out at whatever rate you want. Note you're using the position control to control the speed in this setup but it works just as you've asked. For the position control setup you've requested while using an actuator, a motor controller with a feedback loop could be used and a program could be written to precisely control the position of the actuator. Or if it's a linear servo just have a program sending the PWM signal to the linear servo (much like setup 1 using a linear servo) but have a manual mode where you can adjust that PWM signal with some form of input (potentiometer for example). Let us know if you have any other questions tech@servocity.com.
thinking of building my own screen for my home theatre projectore. i want to build a simple frame that would mve black board top and bottom from 16/9 rastio to the ratio 2.39:1. Esentially i am thinking 2 pieces of wood or light material that will move together so when i press a button botom frame goes up and top part of frame goes down. I can build frame easy enough but if i can find some cheap lightweight servoc one for top frame and one for bottom then i think it would work, but not wanting to spend alot, cheap is cheap. Any recomandations for none industry standared parts, for the home brew kits
If you have to move each panel in two directions you might want to look into building a frame behind the panels (think XY table) and fasten the panels to the movable dolly. You'll then want to select a drive mechanism that works for you (timing belts and pulleys, lead-screws, cable and pulleys, friction drive, etc.) Feel free to reach out should you have any other questions tech@servocity.com.
Hi any brand you would suggest for underwater linear actuators? I need them underwater on the beach (salt water) for many month, powered from a 12V battery + solar panel on a pier (I have permit don't worry). thanks
Hi there, I've just bought one from ebay very similar to the one in your video. Its 12v but much slower than I've seen in your video or any video. Is there something wrong with it?. Help appreciated Andy
That's hard to say given it's not our product. It could be faulty or could just be a different ratio than what you're comparing it to. Please feel free to reach out to our technical team at Tech@ServoCity.com if you have any additional questions. Thank you.
If it's an actuator from ServoCity we have documentation online that would tell you everything you need to know. If it's from somewhere else, you could measure the resistance between the wires to locate the potentiometer wires, or, open it up and trace the wires. Please let us know if you have any further questions.
@@ServoCity it is not one of yours unfortunately it is a duratron mc42-1015h. It says 115v but I thought all linear actuator were dc. Came from a old hospital bed
Here's a video on how to adjust limits on the Super Duty linear actuators. ruclips.net/video/3jzyQ5gQUFE/видео.html Heavy Duty linear actuators do not have adjustable limits. Please let us know should you have any other questions tech@servocity.com.
I have a 2" actuator but only need about 1 1/2 of stroke. I want to run a non momentary switch but can I readjust the limit switch to stop on the out-stroke at 1 1/2? If so, how?
Unfortunately, the limit switches are non-adjustable. Adding external limit switches would be the best solution for a shorter amount linear travel. Please let us know if you have any additional questions tech@servocity.com.
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The damn Actuonix linear actuators with potentiometer feedback don't even come with limit switches. I hit the limit for a just a second and the entire housing started warping. Damnedest thing I have ever seen. Glad you guys designed it right.
Thanks for the video. You both explained all the questions I had with perfect detail; opening the unit itself and displaying the inner working of the actuator was a bonus.!
Great video with simple language for a complex system. I'm a absolute novice but learning so much from these videos, thank you
We're glad you find our videos helpful! As always, don't hesitate to contact us should you have any questions tech@servocity.com.
To be more precise, DPDT = Double POLE Double Throw switch. Good intro to servos & actuators!
A great explanation. I now know 100% more than I did 12 minutes ago!
Glad you found it helpful! Let us know if you have any questions tech@servocity.com.
Technically speaking isn’t a linear servo a Linear Actuator?
Great video guys. Minor correction: You meant "double pole double throw" switch. Cheers
Very Nice Description. Can a Micro:bit or Raspberry PI be used to control the Linear Actuator? Thanks!
I fail to understand why the grey bearded guru doesn't talk a lot in this video, he really deserves it.
I miss more of his technical explanations about the other system. I would love a more complete and technical video of both systems (and even more) work 1:1 comparisons (doing exactly the same task, same conditions, etc)
I loved the way the linear actuator moved. Way better than the servo's jerky moves.
Looking at one of these linear servos to convert a riding mower into a RC mower. Gonna need one for steering, and a light duty one for actuating the hydrostatic transmission control lever. It's gonna be sweet!
Can you explain specifically
More how that would work for a noob?
I bought an actuator for my boat trim motor and it lasted about 3 weeks before it died. I made sure it was water proof and then I also sprayed it with water proofing. So that is one thing you forget to mention. It had much more dynamic and static load rating than I needed and was the correct voltage. It was slow but I would rather slow than not enough lift. Anyway, I would be interested to know what went wrong. The company had a 30 day return but by the time I was able to install I really only got about 3 weeks out of it and maybe had to lift the motor 8 times during that period. Can you comment on what may have/could have gone wrong ?
really appreciate this video now I know what I need
Hey guys just stumbled upon your channel after trying to find a solution to a problem im having. I have little knowledge of anything to do with servos and could really use a hand figuring out what i need to do what i need to do. Im trying to make an exoskeletal arm brace/ elbow joint for my mum who suffered from arthritis and had many failed attempts at replacing the joint. She now has no elbow or bone 8 inches either side of where the elbow should be. Ive figured out the rigging now im stuck on how to wire up an actuator to extend and hold in place with one button and retract and hold in place when released with another. This is a long shot and im sure youre very busy but any push in the right direction would be amazing! Thanks for your time. Karl :)
A couple questions! What is the noise rating on the servo? Also, if I were to open the servo and move the limit switch on the fully-extended side (desolder, drill, solder), would the servo have a correctly-functioning shortened range? I'm looking to do ~85 lbs with a ~1.5" throw and it would be excellent to have the safety in hardware, not software.
I am looking for some ideas as to how to build an old school arcade driving cabinet like Out Run where with the turn of the wheel, the base would move. I am thinking about putting an actuator or servo, I think 4 will do the job. But what I don't know is where to start or look for. Would something like these work at high speed sensitivity and would they handle the weight? I originally was looking at hydraulics, but outside of weight, they would seem slow. Suggestions?
Thank you for reaching out to us. If you could please send additional specifications to our technical department they would be happy to help with some recommendations at tech@servocity.com
Great video, area there any problems that you are aware of regarding installing them in a hot humid greenhouse for ridge and side vent opening? Thank you.
Very good demo.I like the contrast between you two, I actually learned a lot from two perspectives, that was very thorough and satisfying considering my obsession with finding out everything tech,especially electric motors I will subscribe and like. I love the way you get down to business, no extra B.S. I’m a K.I.S.S. fan myself, keep it simple is usually my aspect on things, I also enjoyed the disassembly, appreciate the convinces you 2 have provided and fantastic presentation!
Thanks, Tommy! We appreciate the kind words and are glad you found it helpful!
I would like to trigger a light to come on when the actuator is fully extended. Is this possible?
Hi David, there are various ways you could go about it. For example you could use a limit switch ( www.servocity.com/electronics/components/switches/limit-switches ) that is physically engaged to turn on the light. Or you if you are using something like an Arduino or Raspberry Pi with a servo hat you could use a linear servo ( www.servocity.com/servos/linear-servos ) and a PWM switch ( www.servocity.com/electronics/components/switches/pwm-switches ) and send two PWM signals, one to control the linear servo and one to turn on the light via the PWM switch. You could also use a PWM switch with a Y-harness and linear servo to run them both off of the same PWM signal (like from an RC receiver or Arduino, Raspbery Pi etc) but the light would turn on the entire time the servo is extending and not just at full extension. Let us know if you have any other questions tech@servocity.com.
thanks you guys are awesome.
David Guyton i
@@sharpfinch5354 And it will be thew best thing for her.
David Guyton Yes its possible
Hi I need a linear actuator with 6000N that can adjust limit. I don’t wanna burn it out and I don’t wanna spend a ton of money! Anyone got ideas ? Off Amazon maybe?
Great video. My question is, can I remove the cover of my "Windy City" actuator and reposition either, or both of the limit switches to stop the extension, or retraction, at a particular position? Thank you.
Hello! Great video. Is it possible to create an automatic reciprocating (preferably adjustable) movement with a linear actuator (without having to turn a switch back and forth) and if so what equipment would one need? Thank you so much 😊
arduino
This was an amazing video, thank you very much. Really liked that you taken it apart too.
+Colin Richardson Thanks, Colin!
Great vid. Do you know would you go about controlling the specific position of the actuator throughout the day? Like for a solar tracker. Cheers!
It sounds like you're after a linear servo of some sort, likely combined with a microcontroller to send it position commands such as an Ardunio (www.servocity.com/pololu-a-star-32u4-prime-sv/)
To interpret the signals from a solar tracking sensor or something of the like.
Isn’t a linear servo technically a linear actuator?
Very well edited and great info!
Thanks, Michael! Glad you enjoyed it!
Thanks for showing that actuator. I thought I would need a hydraulic cartridge to push something up, but that should work.
Glad you found it helpful, Ted. Let us know should you have any questions tech@servocity.com.
Thanks Tom and Dustin. Great job.
I am ready to buy the linear servo for an autonomous boat installation using the PIXHAWK
Flight/ navagation controller
A- How do I go about connecting the pixhawk to the linear servo?
hi, I have one of those activators (4 inches) is what I can lift my tractor snowblower that weighs 300lbs, thank you.
You guys are great together, Cracked me when you pulled out the linear servo how Jason was looking at you thinking "why is this dude trying to one up me man"
Great video guys, I will be using this information for sure! Will send you guys an email shortly regarding a project.
Thanks again for the upload.
This WAS a really good instructional video. Excellent.
Thanks, Dennis! Glad you found it helpful and informative.
in case of a real closed loop control, ism't it more correct to use the last stage sensor in place of in-box potentiometer?
Thanks for a great instructional video. I am going to use actuators to control my boats speed and shift her transmission. Do you know of any better suited for the marine environment?
While there are marine grade linear actuators on the market, we do not offer them or have a suggested source that we know to send you to unfortunately. Feel free to reach out to our Tech Team should you have any other questions tech@servocity.com.
Hi, I have question, I have got the Linear 12 V -DC, 300N, 50mm stroke length the same as Jason tested. I connect to Adaptor 500 mA, but does not work is it because I need more Ampere for 12 v dc adaptor?
What a I do to stop my linear actuator from whining when it runs? Very disappointed with the noise from this 12 volt device.
BTW, changing the angle of the actuator, you can change the speed of what you’re moving and range of your movement.
For my application I need 2, of the 2" Stroke 115 lb Thrust Heavy Duty Linear Actuator, I wanted to know if I could use a, "Thrustmaster USB Joystick (PC)", or which one do you recommend. I don't understand much. I have seen your video.
Thanks Raffaele
Would be more interesting if you'd show more of the actuators you are talking about than yourselves. More details would be welcome.
That was an awesome demo guys..I have a question..I am trying to build a scale model of an excavator using the hydraulic principle with syringes.these motors act as Pistons so I should be able to use them instead right,I want to know what torque do these motors have cause I want my excavator to dig and lift just like the real thing.are they expensive to buy and could you pls do a demo on how to convert it to remote control..tnx guys
You can certainly use linear actuators or linear servos in place of hydraulics if the speed, thrust, stroke length and overall size fit your model. Since we’re quantifying a linear force they are rated in pounds rather than a torque measurement. The amount of weight it can lift will depend on the placement of the actuator in your assembly. Prices vary based on what selection you make; we have HD linear servos which are the most plug-and-play solution for r/c. We offer HD linear actuators that are less expensive but more intensive to hook up to R/C (require a motor controller that can convert the PWM signal to a voltage that would get sent on to the motor). and SD linear actuators which are the same as the smaller ‘HD’ linear actuators but beefier for more industrial applications. The video covers how to connect a linear servo or linear actuator to a servo controller. An R/C transmitter and receiver is just a wireless servo controller so it’ll connect the same way. Please let us know if you have any additional questions tech@servocity.com
Super!!!tnx for the prompt reply!!
Another question..how does the boom of a crane extend..do they all have multistage cylinders or are they also equipped with linear actuators within each boom extension?
And i.would really appreciate it if u could do a demo on how the excavotor rotates 360degs and still powers its tracks without its wirings and hydraulics getting twisted in the slew ring.i have looked online but not really satusfued with info or the lack of detail given. Cheers bros!!
Here’s a link to a brief explanation of how a crane boom extends: answers.yahoo.com/question/index?qid=20081125153736AAiN8mW. I would have to do more research on an excavator before commenting on the rotating base; sorry I couldn’t be more assistance in that department. Let us know if you have any other questions tech@servocity.com. Thank you
i, I have an INCA TV lift with a tubular motor. We lost the remote, and
lift got stuck in up position. Any advice how to bring it down? Any
ideas or how to reverse the motor movement? Highly appreciated. Thanks
for sharing awesome ideas.
Hello!
That sounds much outside the realm of our technical support. If you'd like you can send our team an email and see if they can help you out. But no guarantees they will be able to assist troubleshooting other company's products.
tech@servocity.com
thanks thanks!! thanks!! thanks!! thanks!! thanks!! thanks!! thanks!! thanks!! thanks!!
this is what i looking for.. thanks for the video..
Glad you found it helpful!
I am looking for a mechanical device that creates more force in one direction than the return stroke. to shake gold particles along a shaker table. if the force is equal = no movement gained. any ideas.
Awesome vid...does the amp of battery effect the actuator? Asking because I plan to install 2 linear actuators in my truck and debating if I should tap off the truck battery or off separate battery. Thanks
Thanks, Benjamin. If you are running linear actuators, you can tie them into your vehicle battery without a problem. The motor in an actuator won't be bothered by the fluctuation in voltage due to the alternator. More care would need to be taken if a micro-controller were in the equation. Feel free to email us should you have any other questions tech@servocity.com.
@@ServoCity awesome, thank you!!!
Nice video. Very helpful indeed.
I have been going through some linear actuator sites, they mention usage rate or duty cycle like 20% in their specifications, what does this mean?? Could anyone explain.
I am looking for a linear actuator , 80MM/sec speed, with Hall effect encoder for position feedback. The actuator would be active every 2 minutes, with rest periods of 2-5 minutes. Will this type of operation affect the life of the motor ??
I hope to replace four pneumatic actuators with linear servos but $300 per unit is bringing me down. Thanks for the video!
I give you very cheap price
contact me:8320781568
amitthakkar7716@gmail.com
Thank you so much for the video..its very informative..
I had coded a program to set a timer to count the forward extension and reverse retraction of the actuator using 16f877a and to display the time in LCD.
Roopa B please help. How to read position of the actuator with reed magnetic sensor in arduino?
Great review. I have a question. If you stop it in the middle before it hit the limit switch and keep for a few hours does it use any electricity and drain the battery?
The current draw will be considerably less given the motor is going to be at idle but it will continue to draw from your battery until it's turned off of the battery is discharged. Let us know if you have any other questions tech@servocity.com.
Awesome work guys...I have some queries about the servo actuator...how can I contact you?
Hi Sammy, you can email tech@servocity.com with your questions and our team would be happy to assist.
Hey, what would I need in order to be able to control force, so let's say it's some kind of actuator that can pull max force of 100lbs but if I set it half way then I can still pull the full range of actuator range but it would be 50 lbs, quarter setting 25lbs, ect.??? So like a shock absorber but with on the fly resistance control?
Can you provide links to the Proportiojnal Actuator and Controller
Exactly what I was looking for, Thank you very much. :)
Is it possible to have it extend and retract on a constant basis?
Do they make LAs that aren't DC? I'm concerned about brushes and that kind of wear. Do they make brushless LAs?
I have a few questions about the linear servo.
I would like to do position control what would I need for this? Just a PWM Signal?
Also this has a Yellow, Black and Red wire which is which?
Yes, a PWM signal will tell the linear servo exactly what position it needs to be at (just like a normal servo). On a servo lead the Red wire is + the black wire is - and the yellow wire is signal.
can this be use to move the handles in a hydraulic crane system?
Very useful video.because of the situation I will put it,sometimes it will work manual,so the power sometimes will be from the bracket to servo motor.Can it move?Will it may do a problem to the servo motor?
Hi Antonis, please email tech@servocity.com with your question and project specs and we'd be glad to assist. Thank you!
@@ServoCity Thank you very much. I have in my mind a concept which i dont know how to code. Can any body help me about this?
@@antonis2814 Hi Antonis, please email tech@servocity.com and we'll see how we can assist. Thank you!
Hi, thanks a lot for your interesting video;
I just have a question if you permet
Does the linear actuator contain a limit switch that stop it even if we're giving an order to the motor to move ( forward and backward) ?
THANKS :)
How do you call an actuator that has a linear motion , but also has the rotating motion (screw or turning head)
Will it work if we use a hi torque dc geared motor to drive a threaded rod using a timer belt and a pully enclosed in a hard PVC pipe/casing?
Hi Parish, yes, that's one way to make a linear servo. Keep in mind that normal threaded rod is not meant for creating linear motion but for fastening. The threads of a lead screw are cut much smoother and more consistent to create linear motion while minimizing friction. Please let us know if you have any other questions tech@servocity.com. Thank you
Thanks for the advice. ServoCity has the best informative Vlogs.
Thanks, Parish. Glad we could help!
o yes, i thought it doesnt have feedback from the actuator. i need this on my thesis. thanks for the video.
How do these cope with dirty and wet environments like on a tractor bucket?
You will need to consider the IP rating of an actuator in such an application. Most of our actuators are IP54. While it depends how you use your tractor, I would suggest looking for IP67 or higher. Feel free to reach out should you have any other questions tech@servocity.com.
I want to use these motors for my robotic arm project.But my doubt is whether these motors are able to hold the weight of robotic arm when not powered or are at halt at a certain point .
Hi Saksham, the HD series actuators are extremely difficult to backdrive. It depends on your setup, but I would highly doubt that it will cause the actuators to move when powered down. Let us know should you have any other questions tech@servocity.com.
could the power source for a 12 volt linear actuator be a ac plug in 1 amp 12 volt car battery trickle charger ?
Thanks - and great video
If the actuator you choose pulls less than 1 amp under load then it may work. Some trickle chargers may have circuitry that keeps them from supplying voltage til they receive a certain amount of voltage from the battery they are connected to. To check your trickle charger, plug it into the wall, connect it to a multi-meter and see if it's supplying a voltage. Please feel free to reach out to our technical team should you have any further questions at Tech@ServoCity.com.
@@ServoCity Interestingly, a multi-meter does show voltage on my trickle charges But the linear actuator still won't work with any of them - must be some sort of circuitry in the charger to prevent this type of use - so I am scouring my supply of old AC-DC chargers from old phones and rechargeable tools to see if I have anything in the 12V 1 amp range
Nice, educational video. Thanks.
Glad you found it helpful!
do you have a video on how to make an app for an iphone or any phone to be able to control an actuator? like having the actuator connected through wifi to be able to control it from your phone from say another state? thanks in advance!
sorry i dont think theres an app for that but in a budget i recommend those wireless garage keys
This video was fantastic!
Thanks, Tom. Glad you found it helpful.
I've notice some linear actuator move super fast and smooth. They are almost silent. Are these powered by electric motors and a threaded shaft. The way they operation almost seems like they are powered magnetically. What are these linear actuators called?
It's hard to say for sure without knowing the actuator models you are looking into, they could be magnetic. However, there are also pneumatic cylinders that can be very fast, or hydraulics. If you still have questions please feel free to email tech@servocity.com and provide a link if possible for our team to look into further.
Thanks u very much 🙏 thats the information what am looking for excellent n informative 👍👍👍best
If your still around I would like to ask a question. I have an actuator that has stopped working (extending and retracting) and need to raise (retract) the shaft to its shortest length. What would be the simplest way to do this manually, if possible?
It depends on the design of your actuator, but if you can access the lead screw driving the piston, just rotate the lead screw manually (assuming it will still turn) to manually extend/retract. Feel free to contact us should you have any other questions tech@servocity.com.
hello, excellent video !!! Do you know if the linear servos or the linear actuators would have the necessary force to be able to step on the clutch of a mechanical car?
If so, please recommend one.
I am disabled, I appreciate your response.
Glad you found our video helpful, Braulio. Yes, a linear actuator or linear servo is capable of actuating the clutch on a vehicle. There are a lot of variables involved such as the position of the actuator in relation to the fulcrum, the type of clutch (mechanical, hydraulic, etc.), the pressure of the clutch, rated force of the actuator, etc. Please contact us should you have any additional questions tech@servocity.com, we'd be glad to help.
In terms of controlling the analog potentiometer, do you have any equipment on your website or alternate suggestions which connects to a PC, allowing one to set the actuator position by computer?
Thanks guys!
At this time we do not sell any products which allow you to read an analog signal (such as from a potentiometer) from an PC. That being said you might take a look at microcomputers as a means of doing this depending on your project requirements. Please let us know if you have any additional questions tech@servocity.com
Great video
Is there a servo or actuator that is big enough to reach 8-10 feet? Or something that can reach close to that height? Working on a project for wireless surveys and need something like this to add to a pi
There are some very large linear actuators on the market, but I doubt you'll want to tote something of that scale around given the weight that is likely to be associated. If you take on building something for your application you might get some inspiration from an extension ladder; pull the rope and it extends out. You could use a motor to reel in the rope or cable that you use to drive your assembly. Feel free to email our Tech Team should you have any other questions tech@servocity.com.
What about synchronizing 4 servos for a 4 DOF platform sitting on a ball & cup shaft holding all the weight of the simulator? I am building a full size 767 coc
As long as the loads on the linear servos are appropriate, it's possible to do. If they all need to work in unison just send the same PWM signal to them and they'll respond the same. If they need to function independently then you'll want to run them on separate channels and make sure they're not working against one-another. Feel free to reach out to our Tech Team should you have any additional questions tech@servocity.com.
Where I can buy
I wanted to know if it is possible to connect a dual motor controller to a computer, so that the speed and position may be controlled by using a software.
Not directly. It can run off of a PWM signal or analog voltage. Let us know should you have any other questions tech@servocity.com.
What would happen if the power goes out in a mid position? Will it hold the position? Or will it go back to the initial position?
If you remove power from an actuator the motor driving it has no voltage going to it. The motor will stop and therefore the actuator will stay in the position it was in when power was removed.
My question is I need to wire a toggle switch to a linear actuator that came from the treadmill it's AC every video or instruction I find is for a DC linear actuator what kind of DP DT toggle switch what I need to use to operate forward and reverse for a 120 volt incline motor
I'd double check whether the motor is in-fact an AC motor. Even though you plug your treadmill into AC power it's not a given that everything it runs runs on AC. There may be a power inverter built in which changes the AC input to a DC output. If you do find that it's AC, reversing polarity can be done by reversing the polarity of the starter winding. Please let us know should you have any other questions tech@servocity.com.
Hi, I'm thinking of using the Linear Servo (similar to the one Jason used in this video) to drive my syringe pump. I am quite clueless on this and trying to find the right controller and battery. Which controller was used in this video? And what was the ampere hour draw of the battery used in the setup on the video (I would like to know what level of the ampH battery to buy)?
Thanks
Hi Angelique, we're happy to help answer your questions. The linear servos will run on any type of servo controller able to operate a hobby servo. The Actobotics Dual Servo Controller (www.servocity.com/actoboticsr-servo-controller-w-enclosure) was used to operate the linear servo in the video (reference 6:30). The battery was just a lawn mower battery so that the power source would be quickly recognizable by viewers. Any 12V source will be fine so long as it can provide enough current to operate your linear servo (more applicable when selecting the proper power supply that plugs into the wall). The capacity of the battery will depend on the desired run-time and the current draw from the linear servo will depend on the load and frequency of movement. If you have any other questions feel free to let us know! tech@servocity.com or 620.221.0123
ServoCity Thank you so much
So I may or may not be planning on using this to gimbal a rocket nozzle…
Do you know anything similar that can open and close without having to manually change it? I’m not a professional at electronics lol
I think the simplest way would be an automated modification of the system shown at 3:20
Hello,
If I'm understanding correctly, you want a system to continuously run in and out? If so:
I think the easiest option would be the combination of a motor controller, an Arduino, and a Linear Actuator. The linear actuator has a pot that communicates the position of the actuator. The Arduino can read that pot, and control a motor controller. Some simple code could tell the motor controller to run the actuator in one direction, or the other depending on the current position of the actuator.
Hi. I was considering to use a linear actuator to change the tilt angle of a structure holding solar panels. Overall, around 200kg. Would this option vaild to keep the structure to a certain angle for longer periods? Or the weight would push it back? Thanks
Hello thank you for reaching out to us. Please email our technical team at Tech@ServoCity.com with your project details and they would be more than happy to help you.
Hey @MrSavage77 did you find any linear actuator that worked for that kind of load?? I'm looking for something similar for a project.
Dear Servo City, that is very helpful video, many thanks!!
I have one question though, is the any way to vary the output force of the actuator?
The output force can be varied by changing the voltage or limiting the current supplied to the motor. If you want to have even more control there are force sensors available that could be used in conjunction with a motor controller as a closed loop system. Please let us know if you have any other questions tech@servocity.com
Hi, Could you tell me what model linear servo you use in the video. What was the speed of it? Thank you.
once it hits the end switch and you disconnect the power, what happens if you try to compress the rod back in... trying to automate a mechanical button and i need the rod to be extended for longer periodes of time while being under the force that is trying to push the rod back in.
It can support a pretty large amount of load without backdriving (turning backwards under power), how much load are you trying to hold and what speed actuator?
Very well explained !
I have a 12 volt 6inch stroke actuator that stops working after I run it backwards and forwards 2 inches about 3 times. I have to wait about 20 minutes it will start working again. why does it stop working after short period of operation? How can I get it to work on and off over long durations?
We'd be glad to assist. You can contact our Tech Team directly at tech@servocity.com 620.221.0123. Can you provide the p/n on your invoice? What are you running the actuator with? Power Source? Thank you
How do I make it automatically move in and out ? With some type of optical eye, like a sliding door, when someone is approaching it, and it opens for a min and closes automatically.
Hello Tim. Please check out our Apparition Apparatus project on Instructables (www.instructables.com/id/Aberration-Apparatus-Halloween-Prank/ ). It should at least get you pretty close. If instead of sending a PWM signal to a transistor to drive a motor, you sent a PWM signal to a linear servo you could do what you want. Feel free to reach out to our Tech Team at tech@servocity.com should you have any other questions.
Hello Guys, Great video, I would like to use a Linear product to replace the old electronic window regulator motor to actuate the flaps. Can you please tell me what I need to install a gage indicating servo position (Up, 1/2, full) or (0, 15, 30) This is in my very small homebuilt experimental aircraft.
thanks
While we do not condone using our products in high-risk applications such as this, I can help you with the question. The gauge just needs to read resistance from the potentiometer if you're using a linear actuator. This will be an accurate form of feedback. Another option would be to use a linear servo and just have a read-out of the PWM signal being sent. It's not a direct form of feedback as the linear servo doesn't send data back to the controller but you could assume that it's in a given position based on the signal sent. This second option would only be for less mission-critical applications given you are assuming the linear servo reached its target position as opposed to reading the actual current position like in the first option.
@@ServoCity thank you
Hi. We were looking for such solution but we need to install it in Hazardous area, can you recommend any solution which we might consider explosion proof.
Hi Rashid, feel free to contact our Tech Team will your product specifications and they will be glad to help try and answer any questions. tech@servocity.com
Thanks Man, it was awesome video, I will be contacting you guys later on for assistance on my project.
i would like to use one of these to lift and lower my JD 44 inch snowblower on my x 300 Lawn tractor,will the cold affect the function? slow or stop it from working?
The cold should have no affect short of edge cases like if water somehow got inside in which case freezing temperatures would expand it as it turns to ice which may cause damage. Given their IP ratings this is unlikely. You can check the IP rating of the one you are interested in and look up the meaning with this chart www.servocity.com/glossary/#ingress-protection
Is there any way we can get benefits of servo actuator in linear actuators with some simple additions or changes.Secondly what's cost difference in general? What's the max speed force and stopping accuracy of each of them?
You can create a linear servo on your own using a linear actuator and a motor controller that has positioning feedback. Cost is dependent on what components you select for your project. Speed is dependent on the ratio you use and accuracy is going to come down to the stroke length of the actuator (as that will somewhat determine the resolution from the potentiometer) and the circuit board you choose to drive it. Email us at tech@servocity.com if you have any other questions and we'll assist you.
@@ServoCity thank you for elaborate reply.Readon being as a designer one tends to over design by using servos thereby increasing overall cost Thank you providing your contact email.
good info and good video. Now if I wanted the servo or actuator to just keep going in and out on its own but be able to control the speed how would that be done. To add another option if I wanted the auto function (the in and out on it own) with speed control then switch it to be able to control position. how is that magic done? any info you have or if you can point me in a direction. please.
Hi Darrell, sometimes a rotating assembly (think crank, rods, pistons in a car engine) is a preferred setup for linear motion that runs continually. This will keep from having to ask the motor to change directions over and over so your efficiency can potentially be better. If you want to use the actuator I'm sure there are many ways to do it electronically - one of those ways would be to slightly rewire the limits and include a latching relay that would allow it to change direction when either limit is contacted. If it's a linear servo just have a controller with a program to tell the servo to go in and out at whatever rate you want. Note you're using the position control to control the speed in this setup but it works just as you've asked. For the position control setup you've requested while using an actuator, a motor controller with a feedback loop could be used and a program could be written to precisely control the position of the actuator. Or if it's a linear servo just have a program sending the PWM signal to the linear servo (much like setup 1 using a linear servo) but have a manual mode where you can adjust that PWM signal with some form of input (potentiometer for example). Let us know if you have any other questions tech@servocity.com.
thinking of building my own screen for my home theatre projectore. i want to build a simple frame that would mve black board top and bottom from 16/9 rastio to the ratio 2.39:1. Esentially i am thinking 2 pieces of wood or light material that will move together so when i press a button botom frame goes up and top part of frame goes down. I can build frame easy enough but if i can find some cheap lightweight servoc one for top frame and one for bottom then i think it would work, but not wanting to spend alot, cheap is cheap. Any recomandations for none industry standared parts, for the home brew kits
If you have to move each panel in two directions you might want to look into building a frame behind the panels (think XY table) and fasten the panels to the movable dolly. You'll then want to select a drive mechanism that works for you (timing belts and pulleys, lead-screws, cable and pulleys, friction drive, etc.) Feel free to reach out should you have any other questions tech@servocity.com.
Hi any brand you would suggest for underwater linear actuators? I need them underwater on the beach (salt water) for many month, powered from a 12V battery + solar panel on a pier (I have permit don't worry). thanks
Sorry but we do not have a suggestion for a marine grade actuator.
Bro I want 32 mm bore and 50 mm strock lenth ...in high speed motor ...how to buy this bro
Hi there,
I've just bought one from ebay very similar to the one in your video. Its 12v but much slower than I've seen in your video or any video. Is there something wrong with it?.
Help appreciated
Andy
That's hard to say given it's not our product. It could be faulty or could just be a different ratio than what you're comparing it to. Please feel free to reach out to our technical team at Tech@ServoCity.com if you have any additional questions. Thank you.
What if you don't know what the feedback wires are. I have no documentation on mine as it is a used actuator
If it's an actuator from ServoCity we have documentation online that would tell you everything you need to know. If it's from somewhere else, you could measure the resistance between the wires to locate the potentiometer wires, or, open it up and trace the wires. Please let us know if you have any further questions.
@@ServoCity it is not one of yours unfortunately it is a duratron mc42-1015h. It says 115v but I thought all linear actuator were dc. Came from a old hospital bed
You didn't open up the linear actuator.. I wanted to open up mine to change the position of the limit switch.. Would you recommend to do so?
Here's a video on how to adjust limits on the Super Duty linear actuators. ruclips.net/video/3jzyQ5gQUFE/видео.html Heavy Duty linear actuators do not have adjustable limits. Please let us know should you have any other questions tech@servocity.com.
I have a 2" actuator but only need about 1 1/2 of stroke. I want to run a non momentary switch but can I readjust the limit switch to stop on the out-stroke at 1 1/2? If so, how?
Unfortunately, the limit switches are non-adjustable. Adding external limit switches would be the best solution for a shorter amount linear travel. Please let us know if you have any additional questions tech@servocity.com.