Ultrasonic distance sensor 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.

                         

                    

Wire connectig direct as fallowing:     


  • 5V Supply
  • Trigger Pulse Input
  • Echo Pulse Output
  • 0V Ground


Connectors are included so soldering on EMoRo2560 board is not necessary.

UltraSonic distance sensor
Working Voltage 5V DC
Working Current 15 mA
Working Frequency 40 kHz
Max Range 400 cm
Min Range 2 cm
Measuring Angle 15 degree
Trigger Input Signal 10 us TTL pulse
Echo Output Signal Input TTL level signal and the range in proportion
Connector wire length 25 cm
Dimensions 45 x 34 x 15 mm
Weight 12 g

UltraSonic distance sensor mounting kit contains:

1x Ultrasonic distance sensor  HC - SR04

2x M3 screw

2x T-nut

1x 25 cm wire with connectors


UltraSonic distance sensor mounting kit

  • Product Code: HC-SR04
  • Availability: In Stock
  • $7.00

  • Incl. Tax: $7.00

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Tags: Ultrasonic distance sensor, Ultra sonic, distance, senzor, HC-SR04, ranging module