Raspberry Pi Sensors and Modules : Buy HC-SR04 ULTRASONIC ...

HC-SR04 ULTRASONIC SENSOR MODULE

Hot -40 %

HC-SR04 ULTRASONIC SENSOR MODULE

Stock: In Stock
Brand: Others
Model: HC-SR04
Weight: 50.00g
SKU: HC-SR04

Products Sold: 394

Product Views: 21418

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₹119.00

₹199.00

Available Options

Additional Items

Ultrasonic Mount (+₹50.00)

HC-SR04 Serial Converter Board (+₹250.00)

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Description
Reviews

Compatible with ARDUINO, RASPBERRY PI, AVR, PIC, 8051, etc.
Working Voltage : 5V(DC)
Static current: Less than 2mA.
Output signal : Electric frequency signal, high level 5V, low level 0V.
Sensor angle : Not more than 15 degrees.
Detection distance : 2cm-450cm.
High precision : Up to 2mm
Input trigger signal : 10us TTL impulse
Echo signal : output TTL PWL signal

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

The basic operation principle is below :

use IO port TRIG to trigger ranging. It needs 10 us high level signal at least

Module will send eight 40kHz square wave automatically, and will test if there is any signal returned.

If there is signal returned, output will be 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*sound velocity(340m/s) / 2

You can use the above calculation to find the distance between the obstacle and the ultrasonic module.

NOTE : The module has a blind spot of 2cm(very near). So obstacle held too closely will not be detected.

Tags: hc-sr04 , ultrasonic , sensor , proximity , obstacle

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