Product Description

DESCRIPTION:

• The HC-SR04 ultrasonic distance module has a high precision of up to 3 mm and can easily be accessed by common microcontrollers and Arduino.
• The board has two power lines (VCC, GND) and two lines for initiating a meaurement and reading the distance. A HIGH signal or single pulse on the “Trig” pin triggers a measurement and the module sends a 40 kHz pulse. The returning signal is detected and the output line “Echo” is set to HIGH for the time t. The distance is proportional to the time t and can be calculated with this formula:
• distance in m = t in s * speed of sound (ca. 340 m/s) / 2

SPECIFICATION:

• Input Voltage: 5V
• Range: ca. 2cm to 300cm µ
• Measuring Angle: 15 Grad
• Dimensions: 45.5mm x 20mm x 18mm

Interfacing the HC-SR04 with Arduino Uno:

Datasheet: https://jeevanbeniwal.blogspot.com/2017/01/distance-on-lcd-display-using-arduino.html