Pinouts

Power Pins:

  • Vin - this is the power pin. Since the sensor chip uses 3 VDC for logic, 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 50mA from this if you like
  • GND - common ground for power and logic

Data Pins

  • SCL - I2C clock pin, connect to your microcontrollers I2C clock line. Can use 3V or 5V logic, and has a weak pullup to Vin
  • SDA - I2C data pin, connect to your microcontrollers I2C data line. Can use 3V or 5V logic, and has a weak pullup to Vin
  • INT - Interrupt output, you can use this to give you an alert when the sensor detects something - but it isn't included in our library code
This guide was first published on Dec 29, 2017. It was last updated on Dec 29, 2017. This page (Pinouts) was last updated on Aug 17, 2019.