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Easy Pulse Plugin is an Arduino compatible and breadboard friendly pulse sensor based on the principle of photoplethysmography. It operates at both 3.3V and 5.0V power supply and can be easily plugged into Arduino Uno, chipKIT Uno32, or any other compatible boards for rapid prototyping. With a two-stage filtering and amplification on board, the output of Easy Pulse Plugin is a clean PPG waveform that can be fed to the A0 or A1 analog input pin of Arduino Uno through a user-configurable shunt jumper on board. There is a application example: