HC-SR04 Ultrasonic Sensor

Give your next Arduino project bat-powers with the HC-SR04 Ultrasonic Distance Sensor that can report the range of objects up to 13 feet away. The HC-SR04 ultrasonic sensor uses SONAR to determine the distance of an object just like the bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package from 2 cm to 400 cm or 1” to 13 feet. The operation is not affected by sunlight or black material, although acoustically, soft materials like cloth can be difficult to detect. It comes complete with ultrasonic transmitter and receiver module.

This is a good thing to know when you’re trying to save your robot from hitting a wall. They are low power (suitable for battery operated devices), affordable, easy to interface and extremely popular with hobbyists.

• Power Supply − +5V DC
• Quiescent Current −