ULTRASONIC DISTANCE MEASUREMENT FULL KIT
This kit is built on 89s52 chip & an 16 x 2 LCD is plugged on,to display the distance.
HC SR-04 Ultrasonic Sensor module is used which provides 2cm - 400cm distance measurement, with accuracy of 3mm.
Both the HC-04 & LCD modules can be easily plugged on to the base board.
To measure the distance, a 10uSec TTL pulse is applied to ultrasonic sensor module. The measured distance range from HC SR-04 Ultrasonic Sensor module is the pulse width modulated signal, which can be processed with microcontroller 89s52 in timer mode operation. The echoed ultrasonic wave from the object is used to calculate the distance & displayed on the LCD module.