SR04 - Ultrasonic Ranging Module HC

Product Overview

Part number	SR04
Manufacturer	Elec Freaks
File Size	77.01 KB
Description	Ultrasonic Ranging Module HC
Datasheet	SR04 Datasheet
Additional preview pages of the SR04 datasheet.

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 |