- Vin - this is the power pin. Since the chip uses 3 VDC, we have included a voltage regulator on board that will take 3-5VDC and safely convert it down. To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V
- 3Vo (3v3 on original version) - this is the 3.3V output from the voltage regulator, you can grab up to 100mA from this if you like
- GND - common ground for power and logic
This guide was first published on Jun 03, 2014. It was last updated on Jun 03, 2014.
This page (Pinouts) was last updated on Oct 15, 2021.
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