Gmakerr Ultrasonic Module HC-SR04 Distance Sensor for Arduino UNO MEGA R3 Mega 2560 Rapsberry Pi 3, 2 & RPi Model B+ Robot
Product ID: 41777941
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Description
- 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¡Ávelocity of sound (340M/S) /2
- Power supply:5V DC, quiescent current
Technical Details: 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 Package include: 1*Ultrasonic Module HC-SR04 Distance Sensor
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Customer service was outstanding when I had questions about the product.
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Excellent communication throughout the order process. Product is perfect.
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