{"product_id":"hc-sr04-ultrasonic-distance-sensor-non-contact-distance-measurement-module","title":"4 Pack HC‑SR04 Ultrasonic Distance Sensor – Non‑Contact Distance Measurement Module","description":"\u003ch1\u003e4 Pack HC‑SR04 Ultrasonic Distance Sensor – Non‑Contact Distance Measurement Module\u003c\/h1\u003e\n\u003ch2\u003eHC‑SR04 Ultrasonic Distance Sensor – Non‑Contact Distance Measurement Module\u003c\/h2\u003e\n\u003cp\u003eReliable HC‑SR04 ultrasonic distance sensor for non‑contact object detection and distance measurement, ideal for robotics, obstacle avoidance, smart parking, and Arduino\/ESP32 projects.\u003c\/p\u003e\n\u003ch2\u003eHC‑SR04 Ultrasonic Distance Sensor Compatibility \u003c\/h2\u003e\n\u003cp\u003eWorks with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and most microcontroller platforms using standard TRIG and ECHO digital pins. The module is typically powered at 5V, and ESP32\/3.3V systems may require Echo pin level shifting or protection depending on the setup.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features \u003c\/h2\u003e\n\u003cp\u003eNon‑contact ultrasonic distance measurement from approximately 2 cm to 400 cm, making it useful for obstacle sensing and range finding.\u003c\/p\u003e\n\u003cp\u003eGood measurement accuracy, commonly specified up to about 3 mm under suitable conditions.\u003c\/p\u003e\n\u003cp\u003eSimple 4‑pin interface with VCC, TRIG, ECHO, and GND for easy wiring into beginner and advanced projects.\u003c\/p\u003e\n\u003cp\u003eOperates by transmitting an ultrasonic burst at 40 kHz and measuring the echo return time to calculate distance.\u003c\/p\u003e\n\u003cp\u003eWidely used, affordable, and well supported by Arduino and ESP32 tutorials, libraries, and example code.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cp\u003eSensor type: HC‑SR04 ultrasonic ranging module.\u003c\/p\u003e\n\u003cp\u003eOperating voltage: typically 5V DC.\u003c\/p\u003e\n\u003cp\u003eOperating current: typically around 15 mA during measurement, with low standby current.\u003c\/p\u003e\n\u003cp\u003eMeasurement range: approximately 2 cm to 400 cm, with some guides noting best real‑world performance closer to 10 cm to 250 cm depending on surface and environment.\u003c\/p\u003e\n\u003cp\u003eUltrasonic frequency: 40 kHz.\u003c\/p\u003e\n\u003cp\u003eMeasuring angle: typically around 15°.\u003c\/p\u003e\n\u003cp\u003eTrigger input: 10 µs HIGH pulse to start a measurement cycle.\u003c\/p\u003e\n\u003cp\u003eOutput: ECHO pulse width proportional to distance; a common formula is time in microseconds divided by 58 for centimeters.\u003c\/p\u003e\n\u003ch2\u003eIdeal Uses\u003c\/h2\u003e\n\u003cp\u003eObstacle avoidance for robots, rovers, and autonomous vehicles.\u003c\/p\u003e\n\u003cp\u003eDistance measurement in parking, tank level, and object detection projects.\u003c\/p\u003e\n\u003cp\u003eEducational electronics projects for learning timing, sensors, and real‑world measurement with microcontrollers.\u003c\/p\u003e\n\u003cp\u003eInteractive installations and smart devices that need low‑cost proximity sensing.\u003c\/p\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cp\u003e1 × HC‑SR04 Ultrasonic Distance Sensor Module.\u003c\/p\u003e\n\u003ch2\u003eSafety Note\u003c\/h2\u003e\n\u003cp\u003eThis sensor performs best on solid, flat targets and can give weaker or less accurate readings on soft, angled, narrow, or sound‑absorbing surfaces. When using with 3.3V microcontrollers such as ESP32, protect the ECHO line appropriately if your board is not 5V tolerant.\u003c\/p\u003e","brand":"sugar","offers":[{"title":"Default Title","offer_id":44775946289287,"sku":null,"price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/HC_SR04UltrasonicDistanceSensor_d6719adf-a678-452a-af6a-3edf78de6b30.png?v=1780481905","url":"https:\/\/sugarstore.dev\/products\/hc-sr04-ultrasonic-distance-sensor-non-contact-distance-measurement-module","provider":"sugar","version":"1.0","type":"link"}