It's been a little bit frantic the last few days, and I didn't really have much time to work on this project, but I decided to at least write about what the plans are.

First of all, the "dumb" blinking barrette has been given to a number of people for testing, so that I will know if this general size, weight and attachment method are practical. I still have a few left, I might put them on Tindie when I find a bit of time to make proper photos and write the description.

Second, the "smart" barrette is supposed to run CircuitPython and have a bunch of sensors built in — pretty much like the Adafruit's Circuit Playground Express, except with a battery, a charger and some standard of sockets for all the devices. So... why not just use the Circuit Playground Express, and make a base board for it with the battery, charger and the sockets, and the barrette, of course? That would save me a lot of work and testing, and it would still look pretty interesting. So that is the current plan. I found a nice round LiPo battery, and I started to design the PCB for the base:

I still requires more work, of course — maybe when I have another sleepless night.