SparkFun Rotary Switch Potentiometer Breakout Boards, Sparkfun Originals Capacitive It essentially combines a simple

It essentially combines a simple optical heart rate sensor with amplification and noise cancellation circuitry making it fast and easy to get reliable pulse readings

Status/Charge/RSSI LEDs

These are very thin variable potentiometers

Now you can add low-power-consumption motion sensing to your next project

if you look at the device from the bottom the pin out goes

SparkFun Rotary Switch Potentiometer Breakout Boards, Sparkfun Originals Capacitive It essentially combines a simpleThe SparkFun Rotary Switch Potentiometer Breakout is a small board the allows you to add resistors to a 10 position rotary switch, turning it into a potentiometer with 10 discrete steps. Multiple applications require potentiometers that are hard to find due to specific resistance values or custom tapers, the Rotary Switch Potentiometer board allows you to populate your own resistors to help match situations where ordinary parts aren? t available or