Suggestions: spherical mirrors can move the laser beam a lot with small movements I suppose, magnetic balls can be used with the coils to create larger and faster moving images (you may need to compensate the power of the coils with the faster moving ones because of the mass of the ball...)
Using speaker (trebles ones or piezoelectric driver) with a small mirror on top to scan like a crt tv (high frequency horizontal scan, low frequency vertical scan) can save a lot of work, only needing to control when the led is on or off (vibrating a mirror on plus 20khz may require a lot of power...)
Super dope idea to move one mirror in two axes! Maybe you could try to use a flexure design to avoid using heavy bearings and further reduce the overall weight.
Totally agree. Use smaller (lighter) mirror and use flexures. Huge hidden advantage is that flexures will create a counter force. (Meaning controlling the position of the mirror will be easier) Unfortunately, making flexures is not that easy. You could probably 3D print something, but the design of the flexure has a huge impact on the dynamics (of the control loop)
Everyone has been inspired, me too! I think a thin PCB with coils with spiral cuts around it to be also springy and a hole in the middle to put a pivoting support could be perfect. On top of it you should glue a thin light aluminium "foil like" mirror that will also help for cooling. That way your first PCB coil connection with two H-bridge will be ok. The bend will be proportional to the current due to the springy effect of the PCB. And the polarity will be the direction of the tilt. One flaw will always be inertial momentum but this way it will be highly reduced. In high quality machines steppers are substituted by galvanometers (a lot faster). Bye! Very inspirational.
Looking forward for the next part! I think you can add a cooling profile to the pcb itself to keep the coils from overheating? Wondering how many projects you are working on at the same time? 😄
My friend. Thank you for doing this one. I bought a bag of cheap 3v laser diodes a while back and I was thinking about putting together some sort of light show. Now I know how to make one. 🙂
Fantastic project. Suggestion: remove the bearings and make the system rigid (But bendable) this should give more proportional control and remove momentum.
This is super complex and advanced, have never seen anyone going really involved as yours. Using electromagnets to control the mirror position as a laser scanner. Keep it up, can't wait to see the next video of this project.
Very Cool!!! Just the video I needed. Ive been trying to figure out how to do this with brushless motors because stepper motors and cheap servos are too slow. Im new to the arduino and cant figure out how to run the speed controllers thru the arduino. Brushless would certainly be fast enough as I have several layng around that are for airplanes or large drones. Installing mirrors to big brushless motors is a lil scary cause as fast as they spin it could send glass right through your body
The video ended on biasing the beam by one mirror with resistors manually. But where are the figures drawn from the Arduino or the oscillators? Didn't work out?
A Spanish guy stealing Chinese designs... Love it! And I have a maker channel too but the current project will probably take 6 months. I'm amazed at how you can post new content every week. You are a machine! Keep up the great work!
What are MOSFETs supposed to be used for, if the output power of the amplifiers (10-15 W) is enough to drive the electromagnets? With a coil resistance of 4 ohm, the current through the coil, at a supply voltage of 8 volts, is 2 amperes and the coil heats up a lot (blue driver)...
Hello, how's your project doing? Any Updates? I'm trying the same idea but with electromagnets instead of pcb coils with the hope of a more powerful magnetic field for faster movements. I'm also using very small ball bearings for now. Any tips from your side?
Hi, I have a question about the "homemade filament" project. How do I know how many watts the resistors have. IN PCB. And how many watts does the heater, heatsink and stepper motor have? Thank you for the answer.I love your videos.
CRT deflection coils require quite high voltages (1200V if memory serves me correctly) - so a controller can be hard to build, also quite dangerous to touch, I have tried several times - it hurts, and can actually completely numb the entire arm for a few minutes.
@@EgonSorensen I'm not talking about driving the coil of a CRT TV, they need high voltage because it's deflecting a high speed miniscule electron inside vacuum, for laser projector a small magnetic ball with small coil will do... And the horizontal deflection coil is driven alongside the primary of the flyback if I'm not wrong, with lower voltages (only the electron gun is controlled with high voltages I guess)
@@EgonSorensen I don't know a lot of CRT TVs, but I think you are confusing deflection coils with deflection plates (the wires that come out of the flyback) that control constrast and brightness (one is with the electron gun), the deflection coil are only a large electromagnetic made of copper that deviates the electron bean inside, the use lower voltages (even some people make crude oscilloscopes driving thoses coils with a amplifier or something like that...)
@@VictorC173 I'm a radiomechanic, though it is a while ago - I used to repair CRT televisions all day long. I have touched all voltages in a CRT tv, and trust me - the deflection coil IS high voltage, and as I said - it hurts if/when it is touched. The high voltage from the flyback transformer goes to a hole in the tube itself, providing a voltage potential difference to the outside of the tube - which is grounded. The glow at the rear of the tv is low voltage (emitting electrons), where as the focus and brightness is high voltage from the flyback - helping to accelerate the electrons toward the screen where phosphor emits light. As I recall from memory the RGB drive that controls the brightness of each color is around 150-180V - with little power.
Suggestions: make the magnets static and attach the coils to the mirror to minimize Newton’s law of inertia. Another idea is to attach the mirror to four speakers. The angle of rotation will be quite small, though.
If I understand you correctly, that seems like a great idea. The only downside is that you need to wire the moving part (not a deal breaker) Having more mass would potentially mean the mirror could move faster. On the other hand, sometimes a little more mass could make the control more stable.
look into the defunct PEACHY PRINTER> they had a far simpler control of a laser via a mirror. they used a simple audio output to modulate the mirror to 3d print. it is a shame the founders were crooks and used the kickstarter funds to build a house. but the tech was really cool and cheap.
I think you misunderstood the uses of the "professional" machine. It has a dmx communication port, which would allow you to control the machine from a dmx console. That alone would justify the cost of it and make the use of a sound detector irrelevant for its use.
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Suggestions: spherical mirrors can move the laser beam a lot with small movements I suppose, magnetic balls can be used with the coils to create larger and faster moving images (you may need to compensate the power of the coils with the faster moving ones because of the mass of the ball...)
Using speaker (trebles ones or piezoelectric driver) with a small mirror on top to scan like a crt tv (high frequency horizontal scan, low frequency vertical scan) can save a lot of work, only needing to control when the led is on or off (vibrating a mirror on plus 20khz may require a lot of power...)
How in the world would magnetic balls can be used? Have any reference to this?
Super dope idea to move one mirror in two axes! Maybe you could try to use a flexure design to avoid using heavy bearings and further reduce the overall weight.
Totally agree. Use smaller (lighter) mirror and use flexures.
Huge hidden advantage is that flexures will create a counter force. (Meaning controlling the position of the mirror will be easier)
Unfortunately, making flexures is not that easy. You could probably 3D print something, but the design of the flexure has a huge impact on the dynamics (of the control loop)
Everyone has been inspired, me too!
I think a thin PCB with coils with spiral cuts around it to be also springy and a hole in the middle to put a pivoting support could be perfect.
On top of it you should glue a thin light aluminium "foil like" mirror that will also help for cooling.
That way your first PCB coil connection with two H-bridge will be ok.
The bend will be proportional to the current due to the springy effect of the PCB. And the polarity will be the direction of the tilt.
One flaw will always be inertial momentum but this way it will be highly reduced.
In high quality machines steppers are substituted by galvanometers (a lot faster). Bye! Very inspirational.
Looking forward for the next part!
I think you can add a cooling profile to the pcb itself to keep the coils from overheating?
Wondering how many projects you are working on at the same time? 😄
My friend. Thank you for doing this one. I bought a bag of cheap 3v laser diodes a while back and I was thinking about putting together some sort of light show. Now I know how to make one. 🙂
very cool! you basically are using voice coil actuators. would be interesting to see you replace the bearings with compliant mechanisms!
Fantastic project. Suggestion: remove the bearings and make the system rigid (But bendable) this should give more proportional control and remove momentum.
This is super complex and advanced, have never seen anyone going really involved as yours. Using electromagnets to control the mirror position as a laser scanner. Keep it up, can't wait to see the next video of this project.
Karl Bujega has some good PCB electromagnets.
Wow I just got some lasers and was thinking of how to do this! Great! Thanks for your videos!
Dry film lubricant with bushings or a polished printed part would work really well 👍🏻
pcb coil heating is totaly fine in fact you can make pcb heat plate to heat other pcb
Very nice... I like very much the 4 coils.... I always love to watch your videos.. thank you...
❤️Frm odisha, India
Simple & Smart - Thanks. Looking Forward for the next part!
Consider make the mirror small for even less weight.
Nicely done! and it's nice to see you're also human - keep on creating great stuff
This is one of the project which I also working on this video will help .
Cool galvo (galvanometer)! I've also seen some pretty fast/accurate galvos made with BLDC motors using FOC.
Interesting as an idea to incorporate into the rear camera of a vehicle.
Awesome project, I was really looking forward to seeing the final result.. I hope you're still working on this one 🤞🏻
i wait the nexte!!!!👍👍👍
Very Cool!!! Just the video I needed. Ive been trying to figure out how to do this with brushless motors because stepper motors and cheap servos are too slow. Im new to the arduino and cant figure out how to run the speed controllers thru the arduino. Brushless would certainly be fast enough as I have several layng around that are for airplanes or large drones. Installing mirrors to big brushless motors is a lil scary cause as fast as they spin it could send glass right through your body
Excellent, how about using PCB coils instead of magnets, it should lighter.
The small movements should be an issue for the thin wire interconnections.
Another neat project Andrei. I look forward to seeing the other parts of the project. Thanks for making this and sharing.
The video ended on biasing the beam by one mirror with resistors manually. But where are the figures drawn from the Arduino or the oscillators? Didn't work out?
Спасибо, товарищ!
Lovely wayting 4 next part...
Excellent
Great 'how to' video
Hope you post a follow up video when you get the new boards.
I really like your videos
Love it! Ty
A Spanish guy stealing Chinese designs... Love it! And I have a maker channel too but the current project will probably take 6 months. I'm amazed at how you can post new content every week. You are a machine! Keep up the great work!
Love your videos ❤️ 😍
Brilliant 🔥
What are MOSFETs supposed to be used for, if the output power of the amplifiers (10-15 W) is enough to drive the electromagnets? With a coil resistance of 4 ohm, the current through the coil, at a supply voltage of 8 volts, is 2 amperes and the coil heats up a lot (blue driver)...
Please make some improvement on the digital electronic load.....Like low voltage safety cut off, temperature, total capacity...
Can you reply to me with the laser modules links?
I'm really a fan of your work, really a great inspiration.
From Nepal
@electronoobs Did the new PCB not work? Will you do a video finishing this project?
How about making thicker traces
Your projects are really amazing and creative, but please let the arduino rest, move on to esp bro, you're holding back your full potential.
Finally
Hello, how's your project doing? Any Updates?
I'm trying the same idea but with electromagnets instead of pcb coils with the hope of a more powerful magnetic field for faster movements. I'm also using very small ball bearings for now.
Any tips from your side?
Yay finally , i was waiting for this video 😊😁❤️
Hi, I have a question about the "homemade filament" project.
How do I know how many watts the resistors have. IN PCB.
And how many watts does the heater, heatsink and stepper motor have?
Thank you for the answer.I love your videos.
you are awesome 🌹🌹🌹🌹
Good as always ;
The good and old technology is always the best: CRT TVs! Scanning horizontally at high frequency and vertically at lower ones (50,60 or even
CRT deflection coils require quite high voltages (1200V if memory serves me correctly) - so a controller can be hard to build, also quite dangerous to touch, I have tried several times - it hurts, and can actually completely numb the entire arm for a few minutes.
@@EgonSorensen I'm not talking about driving the coil of a CRT TV, they need high voltage because it's deflecting a high speed miniscule electron inside vacuum, for laser projector a small magnetic ball with small coil will do...
And the horizontal deflection coil is driven alongside the primary of the flyback if I'm not wrong, with lower voltages (only the electron gun is controlled with high voltages I guess)
@@EgonSorensen I don't know a lot of CRT TVs, but I think you are confusing deflection coils with deflection plates (the wires that come out of the flyback) that control constrast and brightness (one is with the electron gun), the deflection coil are only a large electromagnetic made of copper that deviates the electron bean inside, the use lower voltages (even some people make crude oscilloscopes driving thoses coils with a amplifier or something like that...)
@@VictorC173 I'm a radiomechanic, though it is a while ago - I used to repair CRT televisions all day long.
I have touched all voltages in a CRT tv, and trust me - the deflection coil IS high voltage, and as I said - it hurts if/when it is touched.
The high voltage from the flyback transformer goes to a hole in the tube itself, providing a voltage potential difference to the outside of the tube - which is grounded.
The glow at the rear of the tv is low voltage (emitting electrons), where as the focus and brightness is high voltage from the flyback - helping to accelerate the electrons toward the screen where phosphor emits light. As I recall from memory the RGB drive that controls the brightness of each color is around 150-180V - with little power.
✅✅ like
Great
Hi any update about that project ?
Are the laser pointers lighter than the mirrors? Just move them instead.
Bro when will you made brushed drone part 6
where is the follow up video for this?
Nice 👍🏻
How about using a compliant mechanism to avoid the bearings entirely 🤔
Suggestions: make the magnets static and attach the coils to the mirror to minimize Newton’s law of inertia. Another idea is to attach the mirror to four speakers. The angle of rotation will be quite small, though.
If I understand you correctly, that seems like a great idea. The only downside is that you need to wire the moving part (not a deal breaker)
Having more mass would potentially mean the mirror could move faster. On the other hand, sometimes a little more mass could make the control more stable.
It’s probably better to use an DAC as real galvatrons use to control the position very precisely.
Does anyone know where the second part is? I really want to see the solution!
What is the resistance of the coils? I'm trying to make a similar project and can't figure out how much power supply do I need.
You can use 4ohms coils which can take 1.25A with 5V.
should you mention laser is dangerous in the video ?
Hi, where can I get the laser diode?
but the coilgun project plss update
look into the defunct PEACHY PRINTER> they had a far simpler control of a laser via a mirror. they used a simple audio output to modulate the mirror to 3d print. it is a shame the founders were crooks and used the kickstarter funds to build a house. but the tech was really cool and cheap.
Hlo sir i hade to build a app from mit software
In which I hve store a data and show that data in bar graph sir plz help me to buit the app
Still working on part 2 I hope!
Next project make a usb-c hub!
Is it possible to get 3D files for external coils construction?
The question is canceled. It's no longer necessary.
I think you misunderstood the uses of the "professional" machine. It has a dmx communication port, which would allow you to control the machine from a dmx console. That alone would justify the cost of it and make the use of a sound detector irrelevant for its use.
potentially, yes.
What is the bandwidth of dmx communication?
@@oscargraveland 250 kbit/s
предлагаю замутить лазерный гравер на GRBL
when is a part 2 broo
🌟🌟🌷🌟🌟
next movie?