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Price comparison product image SainSmart Ultrasonic Module HC-SR04 Distance Sensor for Arduino UNO MEGA R3 Mega2560 Duemilanove Nano Robot XBee ZigBee

SainSmart Ultrasonic Module HC-SR04 Distance Sensor for Arduino UNO MEGA R3 Mega2560 Duemilanove Nano Robot XBee ZigBee

by SainSmart
New from:
US $2.99
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Last refresh Aug/20/2017 05:35 AM
or
or
EAN
6952131720835
Brand
SainSmart
UPC
6952131720835
ISBN
N/A
MPN
N/A

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

NOTE: The link is the documents about Ultrasonic Module HC-SR04 Distance Sensor.
https://s3-ap-northeast-1.amazonaws.com/sain-amzn/20/20-019-100/HC-SR04.rar

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