Arduino Sr04 Ultrasonic Sensor Module - Black And Blue

Description

Ultrasonic Sensor Module HC-SR04 is commonly used with both microcontroller and microprocessor platforms like Arduino, ARM, PIC, Raspberry Pie etc. The following guide is universally since it has to be followed irrespective of the type of computational device used. Power the Ultrasonic Sensor Module using a regulated +5V through the Vcc ad Ground pins of the sensor. The current consumed by the sensor is less than 15mA and hence can directly power by the on board 5V pins. The Trigger and the Echo pins are both I/O pins and hence they can connect to I/O pins of the microcontroller. To start the measurement, the trigger pin has to make high for 10uS and then turned off. This action will trigger an ultrasonic wave at frequency of 40Hz from the transmitter and the receiver will wait for the wave to return. Once the wave is returned after it getting reflected by any object the Echo pin goes high for a particular amount of time which will be equal to the time taken for the wave to return back to the sensor.