Tri-omni wheel Pi Zero robot

Files

SSEYO Koan Play File - 111.21 kB - 02/27/2016 at 16:44

Components

3 × 25mm ebay gear motor bracket

3 × GA25Y370-47 6V DC 125 RPM gear motor

3 × 4mm to 5mm Set Screw Shaft Coupler Actobotics Part # 625218 5mm shaft side tapped to 6mmx1

1 × Rapberry Pi Zero

3 × 38mm (1.5inch) double plastic omni wheel

Project Logs

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DS4 Linux driver bug
Jeffrey Jacques • 03/16/2016 at 19:22 • 0 comments

At the time of writing, Raspian is running Linux kernel 4.1.19 that has a bug in the bluetooth driver for Sony DualShock 4 controllers with newer firmware. Kernels as of 4.5rc1 have the fix. Until Raspian kernel packages catch up the solutions I can see are to backport this fix by patching and compiling a custom 4.1.x kernel or just running a DS4 of an older firmware.
Info on the driver fix is here:
https://git.kernel.org/cgit/linux/kernel/git/jikos/hid.git/commit/?h=for-4.5/sony&id=b71b5578a84d297954e4812ba0ca2d466e61cf42
Kernel Building on Raspberry Pi:
https://www.raspberrypi.org/documentation/linux/kernel/building.md
Dynamite ESC quick fix
Jeffrey Jacques • 03/03/2016 at 15:48 • 0 comments

Was able to scavenge a Dynamite WP 60A ESC (DYNS2210) that came with the Vaterra Ascender RTR. Virtually the same specs and size, likely a just re-branded Hobbywing. Back together and running!
ESC woes
Jeffrey Jacques • 03/01/2016 at 22:05 • 0 comments

So one of the Hobbywing ESCs is defective and will need replacing. It only runs for a few seconds then dies. The fact that only the defective one has a distinct high pitch whine when powerd was a clue.The other issue is that the reverse mode is less power and thus spins slower per pulse. Maybe this can be compensated for in software, but I'm not sure the rate is proportional. Would be a bummer to have scrap these and go with more expensive ones.

Discussions