Description:

This is the HC-SR04 ultrasonic distance 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!

This sensor has additional control circuitry that can prevent inconsistent "bouncy" data depending on the application.


Specifications:

• Operation Voltage: 5V DC
• Operation Current: 15mA
• Operation Frequency: 40KHz
• Measure Angle: ≤15°
• Ranging Distance: 2cm - 400cm
• Dimension: 45 x 20 x 12mm
• Weight: 7.7g

Links:

• Arduino Tutorial
• HCSR04 Datasheet