Desk of Ladyada - Trying out platform.io and writing a TCA8418 driver

Happy Sunday folks! This weekend we spent some time getting back to the camera boards and breakouts we designed a while ago. i wanted to try using cameras with esp32 with the esp32_camera module since we're now using that in circuitpython (https://github.com/adafruit/circuitpython/pull/6684) for a wide collection of camera chipset support in the espressif family. folks who have used esp32 for big projects in arduino know that the build platform can be a lil slow, so we're trying out platform.io which has 'official' support from espressif. This is our first time using it in a long time but we got a workflow going. On the 'stemma sunday' front, we are also returning to a keypad driver using the TCA8418, as we were able to get a reel of chips. This is a 80-key matrix driver over i2c and it even has linux kernel support! we're starting on a CircuitPython driver and so far have much of the gpio capability written out.
The Great Search - 4-channel version of TCA9548
https://www.digikey.com/short/r7t9fdjw
A couple weeks ago we showed off a design for a TCA9548 1-to-8 I2C multiplexor. We wanted to take a look and see if there's a chip that's similar but a 4-channel version, since most folks don't necessarily need 8 of a duplicated sensor. Turns out, finding such a thing took a few extra steps and we wanted to show off how we may source a part that's a lil non-standard!
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