HC-SR04 Abstandsmessung Ultraschall Ultrasonic Sensor Module

Item number: SE10001

MPN: SE10001


Category: Distance Sensors

4,33 €

including 19% VAT.,

Available now!

Shipping time: 1 - 3 workdays



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
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 market .
Compared to the Shap IR ranging module , HC-SR04 is more inexpensive than it . But it has the same ranging accuracy and longer ranging distance.
  • Power supply :5V DC
  • Quiescent current : <2mA
  • Effectual angle: <15°
  • Ranging distance : 2cm ? 500 cm
  • Resolution : 0.3 cm
  • There are 4 pins out of the module : VCC , Trig, Echo, GND . So it's a very easy interface for controller to use it ranging. The all process is : pull the Trig pin to high level  for more than 10us impulse , the module start ranging ; finish ranging , If you find an object in front , Echo pin will be high level , and based on the different distance,it will take the different duration of high level. So we can calculated the distance easily :
Distance = ((Duration of high level)*(Sonic :340m/s))/2

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