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Placed an order for two testing boards at JLCPCB! Very exciting!

I added a solder jumper that can be cut to disable the LiPo charger, in case people want to power the device from some other source.

And I added through-hole pads for the voltage provided by the battery and for ground, to be able to measure power consumption more easily using a Power Profiler Kit II.

On a whim, I made the PCB yellow! Seemed fitting for a "CO2 Canary", which I guess is the name of the device now! 🐦