2PCS KY-039 Finger Measuring Heartbeat Sensor Module Board for Arduino Brand DIY
1,01 €
Arduino Test Code. This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse. Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other side of the finger, phototransistor used to.
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