HC-SR04 Ultrasonic Distance Sensor for Arduino

HC-SR04 Ultrasonic Distance Sensor for Arduino

Measure distance quickly and reliably for Arduino robotics, obstacle detection, parking sensors, and DIY automation projects. The HC-SR04 sends an ultrasonic pulse and calculates distance from the returning echo, making it a practical sensor for beginner and intermediate electronics builds.

Key features

• Typical measuring range: approximately 2 cm to 400 cm
• Typical resolution: around 3 mm under suitable conditions
• 4-pin interface: VCC, TRIG, ECHO, and GND
• Works with 5V Arduino boards and common microcontroller projects
• Useful for obstacle avoidance, robot navigation, tank-level projects, and distance measurement

Important compatibility note

The ECHO pin is typically a 5V signal. If you are connecting this module to a 3.3V board such as an ESP8266, ESP32, or Raspberry Pi, use an appropriate voltage divider or level shifter to help protect the GPIO input.

Package includes

• 1 x HC-SR04 ultrasonic distance sensor module

Add dependable distance sensing to your next electronics project with the HC-SR04, a compact and budget-friendly choice for Arduino makers in Pakistan.