TinyShield Circle Edge LED Board - Green [Discontinued] _MAKE_DISPLAY_SEG 1x Heart Rate Monitor Sensor

1x Heart Rate Monitor Sensor For Arduino

you can grab a 10" long cable and swap it for the 4" one included

2015 we now use a much beefier polarity-protection transistor

Dimensions: 24mm x 28mm x 9mm (0

TinyShield Circle Edge LED Board - Green [Discontinued] _MAKE_DISPLAY_SEG 1x Heart Rate Monitor SensorThe TinyShield Circle Edge LED Boards allows some cool and easy LED indications using only six I O signals. This board includes 21 LEDs are mounted around the outside of the board to form a full circle and is designed to be placed on the top of the TinyShield stackup. The LEDs are arranged using Charlieplexing, which is a technique to allow for control of multiple LEDs using fewer I O signals. Available with Red, Green and Amber LED color options. To