HC-SR04 UltraSonic Distance Sensor

HC-SR04 UltraSonic Distance Sensor

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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

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