DIY Projects

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

ultrasonic module hc sr04 distance measuring transducer sensor 1 1
Best deal at:
Last Amazon price update was: 14 January 2022 2 h 01 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 (,,, etc) at the time of purchase will apply to the purchase of this product.

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

HC-SR04 sensor ultrasonic distance measurements offers

ESP Easy compatible sensors and actuators offers

  • This product is available at Ebay, Banggood,
  • At you can purchase 1pcs Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor for Arduino for only $1.03, which is 92% less than the cost in ($12.99).
  • The lowest price of Elegoo HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO MEGA2560 Nano Robot XBee ZigBee, Set of 5 was obtained on 16 January 2022 2 h 05 min.


Click to rate this post!
[Total: 0 Average: 0]
Exit mobile version