Ultrasonic Sensor – HC-SR04

Description

This is the HC-SR04 ultrasonic ranging sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.

There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). You will find this sensor very easy to set up and use for your next range-finding project!

Features:

Operating Voltage: 5V DC
Operating Current: 15mA
Measure Angle: 15°
Ranging Distance: 2cm – 4m

Documents:

Datasheet
Example Code