HC-SR04 UltraSonic Distance Sensor

HC-SR04 "Classic" Ultrasonic Distance Sensor

This has been largely replaced with the HC-SR04P or HC-SR04+ which both work from 5.5V down to 3V and are therefore more versatlie.

• Operating voltage: 5V
• Operating current: <2mA
• Sensor angle: 15 degrees
• Range: 2cm - 450cm
• Resolution: 0.3cm
• Output a 10us HIGH signal to Trigger input to start the detection
• Measure the length of pulse received on Echo output to determine distance
• Distance is pulse length * speed of sound (340M / S)) / 2