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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...)

@VictorC173

Жыл бұрын

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...)

@ShopperPlug

Жыл бұрын

How in the world would magnetic balls can be used? Have any reference to this?

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.

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.

Another neat project Andrei. I look forward to seeing the other parts of the project. Thanks for making this and sharing.

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. 🙂

Simple & Smart - Thanks. Looking Forward for the next part!

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!

Very nice... I like very much the 4 coils.... I always love to watch your videos.. thank you... ❤️Frm odisha, India

Awesome project, I was really looking forward to seeing the final result.. I hope you're still working on this one 🤞🏻

I'm really a fan of your work, really a great inspiration.

Love it! Ty

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.

@oscargraveland

4 ай бұрын

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)

very cool! you basically are using voice coil actuators. would be interesting to see you replace the bearings with compliant mechanisms!

Спасибо, товарищ!

Fantastic project. Suggestion: remove the bearings and make the system rigid (But bendable) this should give more proportional control and remove momentum.

Brilliant 🔥

Dry film lubricant with bushings or a polished printed part would work really well 👍🏻

Nicely done! and it's nice to see you're also human - keep on creating great stuff

Excellent

Love your videos ❤️ 😍

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!

This is one of the project which I also working on this video will help .

Yay finally , i was waiting for this video 😊😁❤️

Great 'how to' video Hope you post a follow up video when you get the new boards.

Good as always ;

Excellent, how about using PCB coils instead of magnets, it should lighter. The small movements should be an issue for the thin wire interconnections.

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

Nice 👍🏻

i wait the nexte!!!!👍👍👍

I really like your videos

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.

Great

pcb coil heating is totaly fine in fact you can make pcb heat plate to heat other pcb

you are awesome 🌹🌹🌹🌹

Lovely wayting 4 next part...

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?

@electronoobs Did the new PCB not work? Will you do a video finishing this project?

From Nepal

Interesting as an idea to incorporate into the rear camera of a vehicle.

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

@EgonSorensen

Жыл бұрын

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.

@VictorC173

Жыл бұрын

@@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)

@VictorC173

Жыл бұрын

@@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...)

@EgonSorensen

Жыл бұрын

@@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.

Consider make the mirror small for even less weight.

How about making thicker traces

Are the laser pointers lighter than the mirrors? Just move them instead.

Hi, where can I get the laser diode?

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.

Please make some improvement on the digital electronic load.....Like low voltage safety cut off, temperature, total capacity...

Finally

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.

@user-ws2bv5bv9f

4 ай бұрын

You can use 4ohms coils which can take 1.25A with 5V.

Bro when will you made brushed drone part 6

Hi any update about that project ?

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

✅✅ like

How about using a compliant mechanism to avoid the bearings entirely 🤔

Does anyone know where the second part is? I really want to see the solution!

where is the follow up video for this?

Cool galvo (galvanometer)! I've also seen some pretty fast/accurate galvos made with BLDC motors using FOC.

but the coilgun project plss update

Next project make a usb-c hub!

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.

@oscargraveland

4 ай бұрын

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.

Still working on part 2 I hope!

should you mention laser is dangerous in the video ?

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.

when is a part 2 broo

предлагаю замутить лазерный гравер на GRBL

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.

@oscargraveland

4 ай бұрын

potentially, yes. What is the bandwidth of dmx communication?

@carlosjuanmateoperez

4 ай бұрын

@@oscargraveland 250 kbit/s

next movie?

🌟🌟🌷🌟🌟