OMNI Wheel Robot [Arduino Nano Steppers]

Рет қаралды 12,100

5 жыл бұрын

Part 2: • OMNI Robot Part 2: The...
An OMNI Wheel robot platform made from MDF and 3D-printed spacers. Powered by an Arduino Nano, which controls four stepper motors via Easy Driver boards. Control is via Bluetooth serial.
Code available here: github.com/JeremySCook/OMNI-B...
Music by Chris Zabriskie: "We Always Thought the Future Would Be Kind of Fun" available here: freemusicarchive.org/music/Chr... - used under CCA4.0

Пікірлер: 25

@JeremyCook 5 жыл бұрын

At over 9 minutes, I thought this was a good place to stop the video. I've got a few ideas about what was causing the problems, which you can probable guess if you watch closely. I plan to do a followup where it's able to cruise effortlessly under remote operation-or so I hope. After that I have some other plans for it that hopefully will be revealed in due time... Muhahaha! Also, Evie says hi and hopes you enjoyed the dog break.

@kayamkha 5 жыл бұрын

Excellent Work !!!!

@JeremyCook 5 жыл бұрын

Thanks - putting out something cool on Tuesday, so stay tuned :-)

@MaxMakerChannel 5 жыл бұрын

Thats a really cool project and very similar to my recent camera slider experience. What code did you use to drive the steppers? I used AccelStepper. Very powerful yet simple.

@JeremyCook 5 жыл бұрын

Thanks Max! I'm using accelstepper as well; here's the repository if you're interested: github.com/JeremySCook/OMNI-Bot/blob/master/OMNI-Bot - I'm proud of myself that I actually thought about everything and broke the code out into functions, should be easy to expand on later!

@PotentPrintables 5 жыл бұрын

Nice work Jeremy! Cool to see the progress you have made and it moving around. For the improvement at 0:46, is it tucking the battery all the way under the top and bottom plates?

@JeremyCook 5 жыл бұрын

Thanks! Part of it - actually switched to a ~12V LiPo cell, which should work much better than the USB power packs. Actually think the more important issue was something more mechanical. Around 9:00 might give a hint on that one :-)

@aschreiber 5 жыл бұрын

Glad to see you got it working. Getting a bit of burning on your cnc cuts? Usually that's a sign something is rubbing, check your speeds a bit, not sure why your bit broke but if it got gummed up with saw dust mighta been part of it.

@JeremyCook 5 жыл бұрын

Thanks! Yeah, don't think I had the settings correct on Fusion, especially for longer cuts. It was dipping at a constant 2 degrees without necessarily doing multiple passes.

@davegrandeffo330 5 жыл бұрын

Nice video, Jeremy! You packed a lot of information and instructive views into 9 minutes. I didn't catch whether you had an end use in mind or just created a design challenge to solve and increase your knowledge and skills?

@JeremyCook 5 жыл бұрын

Thanks Dave. Perhaps I should have talked about it more in the video, but I do have a few ideas for using the precise positioning of the steppers. Haven't quite figured out what form that will take, or even if I'll get to it, but definitely want to at least get it rolling under remote control well (hopefully in the next video I put out on it :-)

@askquestionstrythings 5 жыл бұрын

One of these days I'll get around to tearing down another old Tyco triclops rc car to get motors and omnidirectional wheels. I've done a few omnidirectional 3 wheel robot bases, but I think prefer the 4 omni-wheel designs like you built here. I haven't tried with stepper motors.

@JeremyCook 5 жыл бұрын

Neat. Yes, advantages either way IMO!

@askquestionstrythings 5 жыл бұрын

I totally agree there are advantages to consider either way. Cost has been a big factor in why I've often chosen 3 omni-wheel designs.

@JeremyCook 5 жыл бұрын

@@askquestionstrythings Makes sense - obvious weight and internal volume savings too.

@CptJellyfish99 3 жыл бұрын

Hi Jeremy, love the project - I just wondered if those are NEMA 17 stepper motors you're using and what diameter of wheel you have? Cheers

@JeremyCook 3 жыл бұрын

Thanks Nathaniel! Yes, those are NEMA 17 steppers, and the wheel diameters are ~48mm. That being said, if you want to try it yourself, I'd suggest having some way for the wheels to adjust with respect to one another, as 4 wheels don't always contact the ground simultaneously.

@puyobock 5 жыл бұрын

If you make a three wheel version you will always have contact with the floor... and it will still be omnidirectional.

@JeremyCook 5 жыл бұрын

Thanks for checking it out. Debated on a three wheel version, but decided to go with four because of simplified math and because I want it to work as precisely as possible on an x/y plane.

@puyobock 5 жыл бұрын

Yes, you're right, makes calculations easier and more predictable for an X/Y application and you get more traction with four wheels. In any case, loved the video, thanks for sharing it :)

@JeremyCook 5 жыл бұрын

@@puyobock Thanks so much, my pleasure!

@edinhooliveira_ 4 жыл бұрын

Hi Jeremy, I really like your work. Can u share the drawings, and eletrics for this project? I am lookin' forward to build a omni wheel robot too. Best regards!

@JeremyCook 4 жыл бұрын

Hi Ender, thanks so much! I'll upload a Fusion360 file of the body shortly to the GitHub repository, so please check back there. As for the electrictronics, I'm not sure I have a good drawing. I'd recommend looking at the videos and let me know if you have any other questions. That being said, The 'bot didn't work that well, so there are certainly some improvements you could make.

@edinhooliveira_ 4 жыл бұрын

@@JeremyCook thanks for the fast response, I will take a look.