This are both a pre-assembled SMT version and two through-hole kits.
They have an on/off switch, a blink/solid switch, and come with an individually packaged CR2032 battery and two magnets for “pinning” them to your clothes, or sticking to stuff.
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Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: A New Arduino MicroPython Package Manager, How-Tos and Much More! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi
EYE on NPI – Adafruit Daily — EYE on NPI Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey