UltraSonic Range Finder

Ultrasonic Range finder is a valuable sensor when long range, high accuracy and ease of implementation is required. The sensor can be used to measure the distance of any obstacle within a range of 3cm to 400cm (4m) with an accuracy of 1cm. The module has all the electronics and the transducers built on a very dense PCB. The electronics handles everything from 40 KHz generation, transducer driving, input amplification and processing. Finally a high pulse whose width is equal to the time required for the sound waves to reach the obstacle and come back, is sent on the output pin. The module is driven by just one i/o line. The same act as input and output both. First it is input (from the module side), so the MCU can issue a small high pulse. This will trigger the module and the line will become output and the pulse will be sent on it. To read the pulse the MCU must change the i/o line to input and receive the pulse. With some basic arithmetic you can calculate the distance to obstacle.

Ultrasonic Range Finder Features

• Detecting range: 3cm-4m
• Best in 30 degree angle
• 5VDC power supply
• Breadboard friendly
• Dimension: 43x20x15 mm

Ultrasonic Range Finder Support

• Ultrasonic Range Finder Tutorial with Sample code for ATmega32
• Ultrasonic Range Finder Tutorial with Sample code for PIC18F4520 (Coming Soon)
• Ultrasonic Range Finder Tutorial with Sample code for PIC16F877A (Coming Soon)

Ultrasonic Range Finder Video Demo