It’s been a while 
OK so the elephant in the room is we still haven’t released this project as an official product…
Rest assured it’s still on my to-do list, 2023 has just been filled with many projects that have had greater urgency than this one. I still think the PiicoDev MUX is an awesome project that I think will help that 1-in-100 advanced PiicoDev (or other I2C) project, and so;
Feature preview
If you’re absolutely jonesing to use a MUX in a PiicoDev project I have some good news - I’m making the unfinished PiicoDev MUX MicroPython Module available for preview. The feature set is complete-enough for most makers, and there are some salient examples that ought to get you started. In short - any user that is familiar enough with PiicoDev and isn’t scared off by the idea of test-driving an unreleased, undocumented (but super-good-enough) driver will likely know what to do with this information.
The PiicoDev MUX design uses a PCA9546 IC which is the same IC found in a similar offerings. In fact, I’ve tested it with ADA5664 and am pleased to say it works!
Other muxes with more channels in the PCA95xx family might work with the existing driver, since they use a similar register structure - you will just be able to select eg. from a larger pool of buses eg. 8 instead of 4
If anybody tries the driver and would like to document their findings please do! No guarantee of fitness or function is expressed or implied.
