ฝัง
- เผยแพร่เมื่อ 12 พ.ค. 2024
- Once again, PCBWay (www.PCBWay.com/?from=atomic) delivered the goods and the PCBs arrived before I finished making the video on how they were made!
I've started a new project and part of what we're doing will be to try and recreate the fantastic work that's been done by Carl Brugeja (Carl - apologies for the terrible pronunciation of your name in the video) - / carlbugeja - have a look at his videos on PCB motors.
I started looking at creating coils in KiCad and rapidly came to the conclusion that life was far too short and it was the kind of thing that should be automated.
We've ended up with some pretty good results. I've uploaded my code to GitHub - hopefully, it will help other people when it comes to writing KiCad plugins - the code is here: github.com/atomic14/kicad-coi...
0:00 Why are we here?
0:29 Sneak preview of the PCBs doing something
0:49 What are our constraints?
1:30 Making simple round coils
2:08 Making space for a via
2:26 Getting magnetic fields aligned
3:03 How does this make a motor?
4:14 Arbitrary-shaped coils - is it possible?
4:38 First attempt
4:59 Second attempt
5:25 Third attempt - Chaikin's line smoothing algorithm
5:53 Fourth attempt
6:27 Final working algorithm!
7:00 Getting it working with KiCad
9:45 PCBWay KiCad plugin
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If you'd like to help support the channel then I have a Patreon page: / atomic14
And if you're shopping on AliExpress or Amazon then if you click on these links I will get a little bit of affiliate money:
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You can also join us on Discord here: / discord
And we've got an exciting new newsletter! makernews.substack.com/ - วิทยาศาสตร์และเทคโนโลยี
Love the details of your script for different shapes! and thanks for the shout out!
Thanks Carl! We wouldn't even have started the project without your videos.
Also have a look at this video: th-cam.com/video/zSdetJsSeNw/w-d-xo.html
Hurry up and publish the next video! I've been noodling over this idea for a while and you've completely outdone my aspirations. Nice job!
Would be nice to see if stacking flex pcb coils is economically feasible compared to having the multi-layer pcb manufactured. More coil more gooder.
Yeah, that's a really interesting question, the other thing to think about is the cost difference becomes much less significant for multilayer boards once you start going for larger quantities - ordering 500 8 layer boards works out at about $1.40 each. If you only want 10 then it's $28 each...
An easy way to fillet the sharp corners is to cast two rays with a small angular offset, and then average their hit points.
Interesting idea - I’ll give that a go and see what happens.
This is a great idea for building small robot with facial expression whose eyelids or mouth is too small to be controlled by normal servos. Only 2 coils can change the position of a eyelid with a magnetic
Very pleasing presentation :) Great Job!
Good knowledge, well done, thanks for sharing with us :)
Awesome video! Love how you visualised everything
Glad you liked it!
Beautiful work. I'm really interesting of what sort of torque you can have from this sort of motor. Please keep update.
That's the big question at the moment. Shifting a small magnet around is pretty easy, but we're going to need to actually make something move.
I never know what to write in comments....but, I found the video facinating; very much looking forward to the next installment!
I'm the same, but I also know what a boost it gives people - especially when a video is first released - to know that someone has watched and was interested enough to write a comment. So thank you :)
@@atomic14 Well, I'm always happy to see a new video and try to convey it somehow... it's gratifying to think my awkward comments could have a positive effect!
I've been trying to learn how to use KiCad's Python "API". Your code is very helpful! Thank you for sharing!
You're very welcome!
Thank you, though-provoking and inspiring, as usual!
Thanks - I'm glad you liked it.
Read; "Nikola Tesla U.S. Patent 512,340 - Coil for Electro-Magnets"
What you have is in Fig 1. What you want is in Fig 2.
Tesla found round magnets and round coils produced clean sine waves, as the magnet gradually came to register with the coil.
I played with all sorts of pulse motors 1998-2000. Learned a ton that I didn't really understand in college.
Very interesting - found a video that explains the patent - th-cam.com/video/JyDEJgrr6P0/w-d-xo.html
Thumbs up to you, very useful video...Can you please teach us how to make a triangle shape bifilar which is two triangle coils inside each other and they connect together in the cnter and the two outer nodes are the coil pins.....tried to make 2 triangles and place them within each other but then things went messed up.
How about getting multiple thin boards with an optimal number of layers (say 4) and mounting them on top of one another? Would offsetting such multiple boards improve or decrease overall performance?
Hi Atomic14, here's an idea if not a request: Perhaps at some point you might look at the similar idea of making a capacitive quadrature encoder using nothing but pcb tracks and timers - similar to the digital calipers we use. I've been experimenting with this using 2 pcb's, one rotating over another but so far my results have been terrible and too easily affected by finger proximity. I need some sort of physical common-mode rejection built in to the geometry if not in code.
Have a look at the NodoWheels (Stay with me) They use a Stacked PCB motor to control angular resistance and inertia!
Interesting! I’ll take a look.
Thank you @Atomic14 for sharing the PCB coil design. Have anyone tried designing a Axial flux Generator using the PCB coils? The sample provided by @Atomic14 is bit small, and I am not familiar with using KiCAD software. Can someone help to scale the size for the wegde coil PCB to be 200mm diameter instead of 46 mm diameter?
Thanks for posting that! I have the plugin installed and jupyter loaded to make a json, but how to get jupyter to output a json? Thanks in advance to any that posts a good answer!
Love carls video this is really cool!
Thanks - his videos were very inspiring.
Any video showing it hooked up with proper 3 phase switching?
great informative and interesting Video 🙂
Glad you liked it!
thank you so much it is so good to understand. However I am new bee on scripting. I cannot get how could we put json file in to kicad program. May you explain little
Pure engineering
How to make the via in the center of the coil in Kicad? Been trying much of tonight to do that.
Love the topic and your content. Using 3b1b /anim for the animations? Cheers Chris and Friend(s) for this one!
Thanks - yes 3b1b - I’m using the community edition as the docs are a bit better. Still quite a learning curve though!
Any chance you could explain how to use the plugin? I'm not sure why its not working for me, or if I set it up right.
Have you given any thought to making the coils conform to the specs of Nikola Tesla's "coil for electromagnets" patent? It's two coils arranged in parallel connected in series. Generally described as a pancake coil but the concept also works for cylinders. My testing of them has given some nice results.
Saw now. Thanks for mentioning. Think I looked at that a while ago.
Would like to see one used in low rpm power generation.
+1 at 33/45 RPM...
I suppose there’s a reason why you can’t stack multiple pcbs to increase the coil density? I haven’t thought this through 👀
I think you definitely can. But then it might be better to go for more layers on the board instead. To be honest my knowledge of electro magnetism is pretty low so I’m not sure what would be best.
Yes, ofcourse considered the flow of current in both coils are along the same direction. Stacking several pcb coils along the z axis, essentially can be modelled as solenoid.
Couldn't get that script to function in jupyter, so I drew the coil "by hand".
Knowing M0 AND G CODE would help
Just draw it, old school way.. :)
This is the nearest to my request in the other video I suppose... It could be possible someone taking request for custom size motor? I need someone to help me for a project and by the end of the summer I expect to have some money to hire that person... maybe I'm asking too much too little? S.O.S...
@2:50 This has some strong Megademo vibes from the 90's 😆 th-cam.com/video/01y9RfGw8LU/w-d-xo.html
That brings back some memories!
@@atomic14 Just remembered that this was also in Spaceballs: th-cam.com/video/89wq5EoXy-0/w-d-xo.html
Why does it have to be on a pcb?
simplicity breh. Other components along with motors can be made on the same substrate
You can order them made cheaply, and it's thin. It's much cheaper than trying to get wound coils.