HC-SR04 Sonar sensor

SainSmart | A-000000-01088
Ultrasonic distance sensor HC-SR04
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Ultrasonic sonar sensor HC-SR04

This ultrasonic sonar sensor allows to measure distances from 2cm to 400cm with an accuracy up to 3mm. The measurement angle is approximately 15°. The HC-SR04sonar sensor comprises a ultrasonic transmitter, an ultrasonic receiver and a control circuit. The 4 pin connection correspond to:

  • Power 5V
  • Trigger pulse (input)
  • Echo pulse (output)
  • 0V (ground)
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5 /5

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Anonymous A. published the 03/12/2018 following an order made on 03/12/2018


It's a classic. Works very well, but ultrasonic has it's limitations.

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