Power Pins:

  • Vin - this is the power pin. The sensor chip uses 3 to 5 VDC, so you can use it with just about any microcontroller. 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
  • GND - common ground for power and logic

I2C Pins

  • SCL - I2C clock pin, connect to your microcontrollers I2C clock line. This pin can be used with 3V or 5V logic, and there's a 10K pullup on this pin.
  • SDA - I2C data pin, connect to your microcontrollers I2C data line. This pin can be used with 3V or 5V logic, and there's a 10K pullup on this pin.

Other

  • ACK Pin - This is the interrupt/alert output. You can set up the sensor to warn you on overly high or low UV signal. Logic level is the same as whatever you set Vin
This guide was first published on May 16, 2016. It was last updated on May 16, 2016.
This page (Pinouts) was last updated on Oct 20, 2020.