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The module includes a transistor switch and base resistor so your GPIO drives only a logic signal
LM317 Datasheet
and score displays
It also has built-in XBEE sockets with 20 2mm pins
Infrared Receiver - 38kHz IR Demodulator dfrduino The module includes a transistorThe Infrared Receiver is used to receive infrared signals and also used for remote control detection. There is a IR detector on the Infrared Receiver which is particularly sensitive to the infrared signal,and it can receive the infrared signal very swiftly . The Infrared Receiver can receive signals well within 10 meters. We suggest you using the Infrared Remote Control or any infrared emitter to make your own remote control projects. You can download
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