Here are a few more views:

1. 3D render

2. Back side

3. Silkscreen with front and back sides

Yeah I hear that some people like to keep the bus pullups closer to the host. The other gotcha is that the voltage for the I2C doesn’t have to match the VCC pin and I didn’t want to assume that users would want those coupled together. Perhaps I can add some DNP resistors so users can have a choice of a pull-up on the dev board if they like.

Naturally, just like a making a pull request, I found that my annotations were incorrect for the LEDs (it doesn’t functionally change the schematic) after posting. My intent is to have all odd LEDs on U1 and even on U2 so that when I place them in a circle it’s easy to make usable patterns with one controller at a time as I learn how to use animation engines.

I can’t say I’m a huge fan of btrfs, in my limited sample size of one I had several episodes of esoteric errors and data loss. It’s anecdotal but filesystems have never been something to give me trouble in any other scenario to date. They just exist and do their job silently in my experience, except for btrfs.

Yep, same for me