rp2040-motor-controller

Legal limit in USA is 750 watts, legal limit in UK is 250 watts. Competition on power output is illegal. I have a BBSHD which can be trivially programmed to 1500w output (likely the same as your Luna cycle without a custom controller) and it’s great. It is widely regarded that there is no enforcement of power limits, but manufacturers can’t really advertise illegal power limits for sale. Many high power ebike enthusiasts (for example “High Voltage DIY Electric Bikes” channel on YouTube) argue that these low legal power limits actually make e-bikes less safe, as you need a good 2-3kw to actually ride with the flow of traffic. At US or worse UK power limits, you don’t get enough of a boost for that and you’re more likely to get hit from behind. In my case 1500 watts feels like a good low range of what I would want. Luckily for work I’ve bee

For the RP2040? It’s absolutely suitable for commercial work with the caveat that it lacks any security features to hide your code from users. I’m using it on the brushless motor controllers and CAN BUS nodes on our open source farming robot. I’m also using it on some LED controllers for fun, and really anything I want to build. I’m learning about switching power supplies so I’m designing a bidirectional buck/boost controller with discrete components and software control using the RP2040 as the switching controller. Here’s my motor controller: https://github.com/Twisted-Fields/rp2040-motor-controller

I’m very happy with the mechanical design for my four axis brushless motor powered robot arm with integrated 3D printed planetary gearboxes. I have some hope of picking the project back up and better documenting it, though the CAD files explain a lot. For the last few years I’ve been working on my own brushless motor controller design and I think this year I will have that stable enough to go back to working on this arm. https://github.com/tlalexander/brushless_robot_arm https://github.com/Twisted-Fields/rp2040-motor-controller Direct link to a video of it operating (apologies for the Twitter link) here: https://x.com/tlalexander/status/1455339851734138880

Thank you, yes. Here is a blog post with more information about what we are doing [1] and a direct link to our funding page [2]. We are working on moving to a fully donation supported engineering model so our work can be freely available for everyone the world over, and your monthly contributions make a big difference. Also here is our github with our electronics, software, and hardware designs all permissively licensed. [3] Notably our open source dual brushless motor controller design is coming along nicely. [4] [1] https://community.twistedfields.com/t/join-the-solar-farming... [2] https://opencollective.com/twisted-fields-research-collectiv... [3] https://github.com/Twisted-Fields [4] https://github.com/Twisted-Fields/rp2040-motor-controller

Seems like you need to change the URL to point at a schematic file: https://kicanvas.org/?github=https://github.com/Twisted-Fiel...

I learned PCB design on Eagle, switched to Kicad about 5 years ago, and in the last three years have really been doing a LOT of PCB design with Kicad. I love it so much! Here's a dense four layer brushless motor control board I designed recently, which can be viewed online in the amazing Kicanvas viewer: https://kicanvas.org/?github=https://github.com/Twisted-Fiel...

Kicad is so amazing. Extremely powerful tool with no imposed limits that is completely free and widely used. I just finished the third rev of my open source low cost high power brushless motor controller in kicad. Open formats means Thea Flowers was able to make a beautiful web viewer that takes a GitHub link to a kicad board or schematic file and displays it for ya. You can see my new board in your browser right here: https://kicanvas.org/?github=https://github.com/Twisted-Fiel... I also recently designed a PCB for a friends art project where I needed to place a bunch of LEDs in concentric rings. I used a nice python library for kicad board files to generate a board with all the LEDs placed, then imported the rest of my components and continued with layout as normal. But beyond the fact that it’s a high quality tool, and has easy to mani

Hello everyone, I am the developer and maintainer of this open source farming robot, and I just published our most significant video yet, along with this companion article. I explain the rationale for operating our project as a non profit, explain how 3D printers inspired this approach, and talk about how we hope to empower farmers and communities worldwide through crowd-funded support. I would love to hear your feedback and discussion about our ideas. I know many of you will be interested in our github, so here's the link: https://github.com/Twisted-Fields One of our contributions I am particularly excited about is our open source motor controller. Off the shelf controllers are expensive and require add on boards to fully integrate with our system. Last year we decided to design our own so we can make one board that does everything we ne

I’m doing an open source solar powered farming robot nonprofit thing! [1] It’s an amazing feeling finishing a huge PCB design project for work and then immediately pushing the changes to GitHub. I’ve got a new brushless motor controller in the works that costs under $40 per board fully assembled for high current dual motor control, and anyone can order them (ideally wait till design is slightly more mature). [2] [1] https://community.twistedfields.com/t/march-2022-update-simu... [2] https://github.com/Twisted-Fields/rp2040-motor-controller