Photoplethysmography
Build a heart beat monitor using Arduino and Processing.
Components:
1x IR LED
1x Photodiode/Phototransistor
1x Trimpot
1x 22uF cap
1x 10uF cap
1x 4.7uF cap
1x 220nF cap
1x LM324
2x 100k resistor
2x 2.2k resistor
1x 1.8k resistor
1x 1.8M resistor
1x 100w resistor
1x 47w resistor
The Sensor
Schematic
Arduino 5v to VCC.
Arduino GND to GND.
Arduino A0 to Out.
Code
Test It
