Have you ever wonder what type of sensor that you can use to sense for obstacle ? Well, in this post, I am going to explain a brief detail about using a HC-SR04 Ultrasonic Sensor for sensing obstacle.
The HC-SR04 sensor is using the sonar to determine the distance to an object like what you know about bats or dolphin. It comes complete with ultrasonic transmitter and recevier module.
Some features of the HC-SR04 ultrasonic sensor :
- Power supply : +5V DC
- Working current : 15mA
- Measuring angle : 30 degree
- Ranging distance : 2cm - 400cm
Datesheet HC-SR04
A very good video preview on ultrasonic sensor !
