
Ultrasonic Ranging Detector Mod HC-SR04 Distance Sensor
DESCRIPTION Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work: Using IO trigger for at least 10us high level signal, The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back. IF the signal back, through high level , time of high output IO duration is the time from sending ultrasonic to returning. Test distance = (high level time×velocity of sound (340M/S) /2 We also have a selection of Basic Starter Kit, Deluxe Starter Kit, Ultimate Starter Kit that utilize this module. Wire connecting direct as following: 5V Supply Trigger Pulse Input Echo Pulse Output 0V Ground If you are sourcing a ultrasonic ranging module , the HC-SR04 is good choose . Its stable performance and high ranging accuracy make it a popular module in electronic m