HC-SR04 sensor ultrasonic distance measurements for Arduino, ESP8266, ESP Easy, Raspberry Pi projects

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HC-SR04 sensor ultrasonic distance measurements for Arduino, ESP8266, ESP Easy, Raspberry Pi projects

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The HC-SR04 sensor allows ultrasonic distance measurements between 2 and 450cm. It is a sensor widely used in robotic and RC projects based on Arduino, ESP8266, Raspberry Pi. It is also supported by ESP Easy firmware for ESP8266 WiFi modules.

The HC-SR04 has 4 pins. Two pins for the power supply (+ 5V, GND), a Trig Input pin (trigger input) and an Output pin (or Echo for some manufacturers) of the PWM digital signal. The output will deliver a pulse train proportional to the measured distance.

Technical characteristics of HC-SR04

  • Measuring range: 2 to 450cm
  • Measurement accuracy: 0.3cm
  • Supply voltage: 5V
  • PWM digital output
  • Weight: 9g

HC-SR04 sensor ultrasonic distance measurements offers

ESP Easy compatible sensors and actuators offers

  • This product is available at Ebay, Banggood, Amazon.com.
  • At ebay.com you can purchase 1pcs Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor for Arduino for only $1.03, which is 95% less than the cost in Amazon.com ($19.89).
  • The lowest price of 2pcs Hc-sr04 Ultrasonic Distance Measuring Sensor Module Good Compatible Arduino UNO Mega R3 Mega2560 Duemilanove Nano Robot was obtained on 8 July 2020 3 h 02 min.

 

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Last Amazon price update was: 9 July 2020 3 h 04 min
× Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com (Amazon.in, Amazon.co.uk, Amazon.de, etc) at the time of purchase will apply to the purchase of this product.

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