The circuit uses an optoreflective sensor module that has an infrared (IR) LED and a phototransistor in a common package. The IR LED is the transmitter and the phototransistor the receiver. The ...

A DIY Robot comprised of two microcontrollers, namely the ESP32 and Arduino Nano; integrated with multiple sensors. An IR Sensor Array [TCRT5000] for Line Following, Ultrasonic Sensor for Obstacle ...