Ultrasonic Distance Sensor HC-SR04

Ultrasonic Distance Sensor HC-SR04
Ultrasonic Distance Sensor HC-SR04 Ultrasonic Distance Sensor HC-SR04 Ultrasonic Distance Sensor HC-SR04
Brand: Unbranded
Product Code: HC-SR04
Availability: In Stock
Price: £1.99
Ex Tax: £1.99
Qty:     - OR -   Add to Wish List
Add to Compare

Small low-cost ultrasonic distance measurement modules like HC-SR04 are a cost effective way to sense the distance of nearby objects. Frequently robots use ultrasonic measurement modules to adapt to the environment and sense objects or collisions. These modules they have two transducers; one acts as a speaker which emits ultrasonic waves, the other acts as a microphone to receive the ultrasonic waves that have returned from an object.

 

Specifications

  • Working Voltage : 5V (DC) 
  • Static current: Less than 2mA. 
  • Output signal: Electric frequency signal, high level 5V, low level 0V. 
  • Sensor angle: Not more than 15 degrees. 
  • Detection distance: 2cm - 450cm. 
  • Precision: Up to 0.3cm 
  • Input trigger signal: 10us TTL impulse 
  • Echo signal: Output TTL PWL signal 
  • Item size: 44 x 20 x 15 mm
  • Package Contents: 1 x Ultrasonic Module HC-SR04 Distance Sensor

 

The HC-SR04 requires 5V to run so can be powered from an Arduino or Raspberry Pi but since it uses 5V logic, its important that you take precautions when using it with your Raspberry Pi.  It's explained very well in the video below:

 

 

For the Arduino, its pretty easy to wire up for use:

 

HC-SR04 to Arduino Interface

There is also an improved library and example sketch for the Ultrasonic sensor: 

New Ping Library for Arduino
Example Sketch of New Ping Library for Arduino

Write a review

Your Name:


Your Review: Note: HTML is not translated!

Rating: Bad           Good

Enter the code in the box below:



Secured by PayPal
LimeTrace Electronics © 2017