Build a Speed Sensor using Arduino with IR speed sensors to accurately measure the speed of moving objects. This tutorial covers circuit design, sensor calibration, speed calculations, and optimized ...

Receiver Side Arduino UNO R3 - 1 433 MHz RF Receiver - 1 16x2 LCD Display with I2C Module - 1 1-Channel Relay Module - 1 (for turning the engine on & off) LED & Buzzer - 1 each (for warnings) ...