Transmitters & Receivers

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IR Transmitter & Receivers

  • 3mm 940nm LED Infrared Transmitter and Receiver Diodes

Transmitter Circuit

  • transparent diode

Simple IR Transmitter LED connected with a Resistor, 330 Ohm or higher and connected with battery

Receiver circuit

With a BLACK receiver photo diode, which is reverse-biased,

  • connect the cathode with the VCC positive,
  • the anode with a resistor and an LED to the ground.

When the 2 circuits are in range, the LED will Glow

PIR Motion detector Sensor

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Reflective IR Obstacle Avoidance Sensor Modules

KY-008 Laser transmitter receiver Sensor Module

Ultrasonic Distance Sensors

Need a microcontroller or R-Pi board to decode the signals received

RF Transmitter and Receiver