Power Pins

  • V+ - this is the power pin. We have included an N-Channel FET driver on board for the IR LEDs that will take 3-5VDC. To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V microcontroller like Arduino, use 5V.
    • If powering with 5V, the board will draw about 200mA per LED (400mA total) when pulsing on.
    • If powering with 3V the board will draw about 100mA per LED (200mA total).
  • GND - common ground for power and logic.

Input Pin

  • In - this is the signal input pin. When the pin is high, the IR LEDs are on, when the signal pin is low, the IR LEDs are off.

STEMMA JST PH

  • STEMMA JST PH - 2mm pitch STEMMA JST port with connections for V+, GND and In. Plug in a 3-pin STEMMA JST PH cable with headers or alligator clips on the end and you can easily wire this board up without any soldering at all. 

Optional 5mm LED

  • On the back of the board, there is a spot to solder an optional 5mm IR LED. This can be used if you want additional IR coverage.

Signal LED and LED Jumper

  • Signal LED - In the lower left corner, below the STEMMA connector, on the front of the board, is the signal LED, labeled Sig. It is the red LED. Since humans don't see in IR, the Signal LED lights up to let you know when the IR LEDs are lit.
  • Signal LED jumper - This jumper is located on the back of the board and is labeled Sig. Cut the trace on this jumper to cut power to the "Sig" LED.

Power LED and LED Jumper

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

This guide was first published on Nov 16, 2022. It was last updated on Jun 22, 2024.

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

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