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SR-04 Ultrasonic Distance Measuring Sensor Module
Sensors
Product ID:
HF800196
Stock:
200 units available
Details:
The HC-SR04 Ultrasonic Distance Sensor is a widely used and low-cost module for measuring distance u...
The HC-SR04 Ultrasonic Distance Sensor is a widely used and low-cost module for measuring distance using ultrasonic sound waves. It is commonly used in Arduino, Raspberry Pi, and robotics projects for obstacle detection and ranging applications.
🔹 Key Features:
Operating Voltage: 5V DC
Current Consumption: ~15mA
Measuring Range: 2 cm – 400 cm (best accuracy 2 cm – 200 cm)
Accuracy: ±3 mm
Measuring Angle: ~15°
Interface Pins: 4 pins (VCC, Trig, Echo, GND)
Module Size: ~45 mm × 20 mm × 15 mm
🔹 Working Principle:
The sensor sends out an ultrasonic pulse (40 kHz) through its transmitter.
This pulse travels through the air and reflects back after hitting an object.
The receiver detects the reflected sound.
The sensor measures the time taken for the pulse to return, then calculates the distance using:
Distance (cm)
=
Time (µs)
×
0.034
2
Distance (cm)=
2
Time (µs)×0.034
(0.034 cm/µs is the speed of sound in air)
🔹 Pin Configuration:
VCC: +5V power supply
Trig: Trigger pin (Arduino sends a HIGH pulse ≥ 10µs)
Echo: Echo pin (outputs a pulse proportional to distance)
GND: Ground
🔹 Applications:
Obstacle detection in robotic cars.
Parking sensors in vehicles.
Liquid level monitoring in tanks.
Distance measurement for automation projects.
Security systems (motion detection).
🔹 Example (Arduino Use):
Send a short HIGH signal (10µs) to Trig pin.
Measure the HIGH duration of the Echo pin.
Convert the time into distance using the formula above.
Read more
PKR 200.00
