Power Pins

  • Vin - this is the power pin. Since the sensor 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 - 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

I2C Logic Pins

  • SCL - this is the I2C clock pin, connect to your microcontroller's I2C clock line.
  • SDA - this is the I2C data pin, connect to your microcontroller's I2C data line.
  • STEMMA QT - These connectors allow you to connect to development boards with STEMMA QT connectors, or to other things, with various associated accessories.

Power LED and LED Jumper

  • Power LED - In the upper right corner, above the STEMMA connector, on the front of the board, is the power LED, labeled on. It is a green LED.
  • LED jumper - This jumper is located on the back of the board. Cut the trace on this jumper to cut power to the "on" LED.

This guide was first published on Apr 02, 2019. It was last updated on Jun 21, 2024.

This page (Pinouts) was last updated on Mar 08, 2024.

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