I find it more interesting to release small videos to show your progress stop by step instead of releasing it all once. It works in making me patiently waiting for the next part... :-) But I can't wait to see it done !
Yes it is a repetitive and time consuming process :( Adding the feedback wire from potentiometer is good for reading the current position of the servo. But in this project I am not using that (reading 18 separate inputs) for simplicity. Most of the time the potentiometer itself is the cause of error.
@@MakeYourPet yeah that's right . From manufacturing itself the potentiometer has different values in hobby grade servos. because the knob connected with different angle . I did it for collaborative operation by disabling servo we can use the potentiometer as input. And every time i turn on the servo it have sudden jerk so i wrote a function first it reads the pot value according to it's position PID will executed so the smoother operation was done. For bigger project with digital servo and bigger microcontroller we can read and save the last pwm signal in EPROM ..
hello, the battery tester need a battery power between 4,8-6v :/ And on the market, the batteries are powered with a modulo 3,7V !? What battery are you using ? Sorry for this noob's question ;)
I use a 2S LiPo battery on the robot, which makes 7.4V (2S * 3.7V -> 7.4V). In the video I am driving the servo tester with a different 6V NiMH battery. But if you are into these kinda projects, think about getting a DC power supply like this one: a.co/d/j4Prl2D to use for testing and development. It will save your batteries from unnecessary cycles and will totally pay off. Plus you get a clean and adjustable power source to use for any future projects!
If u are into hobby rc projects, I would suggest to get an adjustable dc power supply. It will make life so much easier and will save ur batteries from unnecessary cycles
Old school analog servos were working with 50Hz, which is the 20ms that you mentioned. Digital servos usually work with 300Hz signal which is around 3ms response time. I would use 50Hz which is compatible with almost any pwm servo, unless I really need that extra response time.
@@MakeYourPet so I write down the values of the servos. where do i put it in? in app? do I also have to transfer or install something on the servo controller?
AWESOME!! I bought all the materials already. I've been waiting for this. :D Also wouldn't it be possible to have the program calibrate it and map the values each boot up?
I'm happy you like it :D I've been designing the leg parts this past week and the new video is coming out soon. You only need to calibrate the servos once before installing them. These servos don't have any feedback and there is no direct way to self-calibrate. There may be a way to minimize the servo errors using the touch sensors of the legs and the gravity sensor in different positions. But that would be an indirect approximation and probably very complicated. But I agree that it would be super cool to have it calibrate itself.
I know, but since then things have changed. Some of the ppl in the Discord channel bought these for half the price from AliExpress. So check that out if you are interested.
I wondered how the process goes for the servo setup.
Thanks for another awesome video
This is SOOO cool - Can't wait to see the next step! Thank you for doing this
This is great mate!! Can’t wait for the next part!! 🦀
I find it more interesting to release small videos to show your progress stop by step instead of releasing it all once. It works in making me patiently waiting for the next part... :-)
But I can't wait to see it done !
Thank you! :)
Great vídeos
Very interesting video ! .... again ;)
Yeyyyyyy... Jolly. :)
Finally my comment came in video
It's a tedious process mapping servos I'm already did this and added a feedback wire in potentiometer
That's how I would do it on any servos. I think some higher grade ones already have the extra wire soldered in but they are more expensive... -_-
Yes it is a repetitive and time consuming process :(
Adding the feedback wire from potentiometer is good for reading the current position of the servo. But in this project I am not using that (reading 18 separate inputs) for simplicity. Most of the time the potentiometer itself is the cause of error.
@@MakeYourPet yeah that's right . From manufacturing itself the potentiometer has different values in hobby grade servos. because the knob connected with different angle . I did it for collaborative operation by disabling servo we can use the potentiometer as input. And every time i turn on the servo it have sudden jerk so i wrote a function first it reads the pot value according to it's position PID will executed so the smoother operation was done. For bigger project with digital servo and bigger microcontroller we can read and save the last pwm signal in EPROM ..
Will this hexapod power up with a phone or a computer?
It will work with an Android phone.
hello, the battery tester need a battery power between 4,8-6v :/
And on the market, the batteries are powered with a modulo 3,7V !? What battery are you using ?
Sorry for this noob's question ;)
I use a 2S LiPo battery on the robot, which makes 7.4V (2S * 3.7V -> 7.4V). In the video I am driving the servo tester with a different 6V NiMH battery. But if you are into these kinda projects, think about getting a DC power supply like this one: a.co/d/j4Prl2D to use for testing and development. It will save your batteries from unnecessary cycles and will totally pay off. Plus you get a clean and adjustable power source to use for any future projects!
Is there any other way to power the tester? I only have the 2sLipo battery...
If u are into hobby rc projects, I would suggest to get an adjustable dc power supply. It will make life so much easier and will save ur batteries from unnecessary cycles
Mg996r servos have response time about 20ms
For digital servos it will be 2ms .
I'm not sure about it so kindly clear my doubt is that actually true
Old school analog servos were working with 50Hz, which is the 20ms that you mentioned. Digital servos usually work with 300Hz signal which is around 3ms response time. I would use 50Hz which is compatible with almost any pwm servo, unless I really need that extra response time.
@@MakeYourPet thank you ❤ sir
does the servo store the data somewhere? otherwise I don't understand how this works.
not the servo, but the phone stores those values and uses that to accurately position the servo.
@@MakeYourPet so I write down the values of the servos. where do i put it in? in app? do I also have to transfer or install something on the servo controller?
AWESOME!! I bought all the materials already. I've been waiting for this. :D
Also wouldn't it be possible to have the program calibrate it and map the values each boot up?
I'm happy you like it :D I've been designing the leg parts this past week and the new video is coming out soon.
You only need to calibrate the servos once before installing them. These servos don't have any feedback and there is no direct way to self-calibrate. There may be a way to minimize the servo errors using the touch sensors of the legs and the gravity sensor in different positions. But that would be an indirect approximation and probably very complicated. But I agree that it would be super cool to have it calibrate itself.
Ouchhh just the servo alone is a lot of money for now 🥲🥲🥲
I know, but since then things have changed. Some of the ppl in the Discord channel bought these for half the price from AliExpress. So check that out if you are interested.
@@MakeYourPet hey thanks for getting back to me.
ok found it. $18 a piece? must it be 35kg? im looking at jx6221, also coreless digital