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Ultrasonic Ranging Module HC - SR04


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 ultrasonic to returning.

Test distance = (high level time×velocity of sound (340M/S) / 2




example : https://wiki.odroid.com/odroid_go/arduino/31_ultrasonic_distance_meter

ODROID Ultrasonic Ranging Module for ODROID-GO [77911]

  • Brand: Hard Kernel
  • Product Code: ODROID Ultrasonic Ranging Module for ODROID-GO
  • Availability: In Stock

  • 5.60€

  • Ex Tax: 4.59€