Hi, I am sorry little off topic, but I finished my business card Hope that all is good, boards in factory.
It use Circuitpython from adafruit on arduino zero compatible hardware with SAMD21G18.
- wallet development platform
- badge / wrist band holes ( wearable )
- compatible board with micropython (CircuitPython)
- extra thin Display from here https://hackaday.io/project/18014-5-alp ... splay-22x5
- I2C header for extra sensors ( TOL distance, pressure, compass, gas )
- DS3231 > precise RTC
- SHT21 > temperature, humidity
- BME280 > temperature, humidity, atmospheric pressure
- RGB led
- Power led
- 3+1 buttons
- micro USB or PCB USB
- sd card reader
- CR2032 battery optional power supply or DS3231 backup
- buzzer
- Enig gold 2mm PCB board
Project page https://hackaday.io/project/19597-pycar ... card-shape