Overview
The HC-SR04 Ultrasonic Sensor is a popular distance sensor used for measuring distances accurately using ultrasonic waves. It's widely used in robotics, obstacle detection, and range-finding applications, providing reliable and precise measurements. It operates by emitting an ultrasonic pulse and measuring the time taken for the echo to return, calculating the distance based on this time.
Features
- High Accuracy: Measures distances with accuracy up to 3 mm
- Wide Range: Detects objects from 2 cm to 400 cm
- Easy to Interface: Works with most microcontrollers, including Arduino and Raspberry Pi
- Low Power Consumption: Suitable for battery-operated devices
- Simple Trigger and Echo Pins: Uses a basic two-pin interface for triggering and reading measurements
Specifications
- Operating Voltage: 5V DC
- Current Consumption: < 15 mA
- Measuring Range: 2 cm to 400 cm
- Accuracy: ± 3 mm
- Signal Angle: 15 degrees
- Interface: 4 pins (VCC, Trig, Echo, GND)