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posted by Fnord666 on Wednesday October 09 2019, @05:38AM   Printer-friendly
from the quad-runner dept.

Submitted via IRC for Runaway1956

Amazing Open Source Quadruped Capable Of Dynamic Motion

The more we read about [Josh Pieper]’s quadruped, the mjbots quad A0, the more blown away we are by his year of progress on the design. Each part of the robot deserves its own article: from the heavily modified brushless motors (with custom planetary gears) to the custom motor driver designed just for this project.

[Josh], realized early on that the off-the-shelf components like an ODrive just weren’t going to cut it for his application. So he designed his own board, took it through four revisions, and even did thermal and cycle testing on it. He ended up with the compact moteus board. It can pump out 400 Watts of peak power while its 3Mbit control protocol leaves plenty of bandwidth for real time dynamic control.

[...] Finally it’s all packed into a neat four-legged robot frame with batteries and a Pi. You can get a video summary of the robot here or after the break, and we recommend reading his blog for some more images and details.

 


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  • (Score: 0) by Anonymous Coward on Wednesday October 09 2019, @09:08AM (2 children)

    by Anonymous Coward on Wednesday October 09 2019, @09:08AM (#904593)

    I sent it already to people who I think would be interested, thanks for the link.
    and I hate that nobody's commenting on it, since I don't know enough to comment on the technicalities (what the hell does "brushless motor" even mean?).
    I'm just hoping the apparent lack of interest is in fact a sign that people are too busy contacting the maker in person or commenting on original sources.

  • (Score: 2) by coolgopher on Wednesday October 09 2019, @10:32AM

    by coolgopher (1157) on Wednesday October 09 2019, @10:32AM (#904612)

    Wikipedia has a fairly good description [wikipedia.org] on brushless motors.

    And yeah, this is seriously impressive for a one-man project!

  • (Score: 0) by Anonymous Coward on Wednesday October 09 2019, @12:06PM

    by Anonymous Coward on Wednesday October 09 2019, @12:06PM (#904657)

    I'm less interested in dogbots and more in powered exoskeletons. After that, sex bots.