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
- All prices mentioned above are in United States dollar.
- This product is available in AliExpress, Ebay, Banggood, Amazon.com, Gearbest.
- At aliexpress.com you can purchase Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor for only $0.85
- The lowest price of MCIGICM 5pcs Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor HC SR04 HCSR04 ultrasonic transducer was obtained on 13 December 2018 15 h 03 min.
Output | Relay: 0
tags: EAN List: 0700686902284; 0746591610333; 0712367207663; 0675482430302; 0190835414612; 0611040798231