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1pcs HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor for Arduino ROHS

1pcs HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor for Arduino ROHS
$4.99
  • Stock: In Stock
  • Model: DGHC-SR04
  • Weight: 0.10kg
  • SKU: piece

1. Product feature : 

HC-SR04 ultrasonic module can offer non-contact distance sensing function, the range of which is 2cm—400cm., and the range accuracy is up to 2mm; the module includes ultrasonic transmitter, receiver and control circuit.

 

The basic operation principle is below: 
(1)use IO port TRIG to trigger ranging. It needs 10 us high level signal at least 
(2)Module can send 8 pro 40 kz square wave automatically, and will test if there is any signal returned. 
(3)If there is signal returned, output one high level signal via IO port ECHO. The duration of the high level signal is the time from transmitter to receiving with the ultrasonic. 
Testing distance =duration of high level*voice velocity(340m/s) / 2 

2.Physical map 
Refer to the wiring diagram below, 
VCC supply 5V, and GND is ground wire. TRIG is trigger control signal input, ECHO is echo signal output.

 

3. electric parameter : 

E lectric parameter

HC-SR04 ultrasonic module

O perating voltage

DC 5V

O perating current

15 mA

O perating frequency

40 Hz

U tmost range

4 m

N earest range

2cm

M easure angel

15°

I nput trigger signal

10uS TTL pluse

O utput echo signal

O utput TTL level signal, proportional to the range

specification

45*20*15 mm

 

 

4.Ultrasonic sequence diagram : 

trigger signal


Sending signal inside the module


Output echo signal


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