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This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes w...
7 color flashing LED module automatically uses 5mm round high-brightness light-emitting diode which has the following c...
This sensor is known variously as the Keyes, KeyesIR or Keyestudio KY-032. It is the the functional equivalent of the I...
This device is a lot like the KY-002 Vibration Sensor in that it registers a jolt or a shock. About the only difference...