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    5V Heartbeat Sensor Senser Detector Module By Finger For Arduino

    • Item No : 111729741590
    • Condition : New
    • Brand : Unbranded/Generic
    • Seller : gaserve11
    • Current Bid : US $4.91

    • * Item Description

    • Arduino Test Code. Chosing a very high resistance resistor R1, because most of the light through the finger is absorbed,it is desirable phototransistor sensitive enough. The most important is to keep the shield stray light into the phototransistor.
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