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A thermometer hat – design considerations #COVID19 @josecastillo

Joey Castillo continues development of his Thermometer Hat in a new Twitter thread.

OK! Thermometer Hat, take 2. Recap; the goal: monitor wearer’s temperature, alert them when it’s high, log timestamped data for later review. I kinda went back to the drawing board, simplifying and choosing hardware I can get to work easily with Arduino/CircuitPython.

Leaning toward a SAMD21E now. And instead of just measuring body temp, I stuffed five analog pins + I²C onto a 9-pin connector. Idea being, if there’s something else to measure, there are enough pins to make a board or a flex PCB that does it. This one’s just a thermistor…

Joey says he “Totally cribbed the 9-pin connector idea from the Adafruit Monster M4sk btw. It’s a really clever design: SPI out+control pins, I²C and a spare GPIO in a half an inch? It’s a brilliant connector for a small daughterboard with a TFT and some sensors.”

See the whole thread here for design considerations and progress.

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