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10pcs KY-039 finger measuring sensor modules for Arduino heartbeat new ic un
- Item No : 388551817640
- Condition : New
- Brand : Markenlos
- Seller : *mikesaunty
- Current Bid : US $6.69
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* Item Description
- ARDUINO test code. The most important is to keep the shield stray light into the phototransistor. 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 obtain the flux emitted, when the blood pressure pulse by the finger when the resistance of the phototransistor will be slight changed.
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