SR04 - Ultrasonic Ranging Module HC

Datasheet Details

Part number	SR04
Manufacturer	Elec Freaks
File Size	77.01 KB
Description	Ultrasonic Ranging Module HC
Datasheet	SR04-ElecFreaks.pdf

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: (1) Using IO trigger for at least 10us high level signal, (2) The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back. (3) IF the signal back, through high level , time of high output IO duration is the time from sending ultras.

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Published: Apr 1, 2015 |