The HC-SR04 Ultrasonic Sensor is a highly reliable and affordable distance measuring sensor that uses ultrasonic sound waves to detect objects and measure the distance between them. It’s widely used in Arduino, Raspberry Pi, and other microcontroller-based robotics and automation projects.
Key Features:
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Detection Range: 2 cm to 400 cm
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High Accuracy: ±3 mm
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Operating Voltage: 5V DC
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Working Frequency: 40 kHz
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Low Power Consumption
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Compact Size and Lightweight
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Four Pins: VCC, Trig, Echo, GND
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Compatible with Arduino, STM32, ESP32, Raspberry Pi, etc.
Applications:
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Obstacle detection
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Robotic navigation
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Smart cars
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Liquid level detection
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DIY electronics projects
The sensor sends out an ultrasonic pulse and listens for its echo to determine the distance to an object. It’s easy to interface with any microcontroller and comes with plenty of support from open-source communities.
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✅ FAQ for Rich Snippets
Q1: What is the operating range of the HC-SR04 sensor?
A1: The sensor can measure distances from 2 cm to 400 cm with an accuracy of ±3 mm.
Q2: Can I use this sensor with Arduino and Raspberry Pi?
A2: Yes, the HC-SR04 is fully compatible with Arduino, Raspberry Pi, ESP32, STM32, and other microcontrollers.
Q3: What is the power requirement of this module?
A3: It operates on 5V DC and consumes very little power, making it ideal for battery-operated systems.
Q4: Is any library required to use it with Arduino?
A4: You can use the NewPing library or manually control the trigger and echo pins with basic Arduino code.
Q5: Does this product come with jumper wires or a cable?
A5: No, this listing includes the sensor module only. Jumper wires need to be purchased separately.
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