SR-04 Ultrasonic Distance Measuring Sensor Module

Key Features of HC-SR04 Ultrasonic Sensor Module:

• Wide Measurement Range: Capable of accurately measuring distances from as close as 2cm to as far as 400cm, providing versatility for various applications.
• High Precision: Offers precise distance measurements with an accuracy of up to 1cm, ensuring reliable performance in demanding projects.
• Low Power Consumption: Operates on a low voltage of 5V DC and consumes minimal current (less than 15mA), making it energy-efficient and suitable for battery-powered applications.
• Easy Interface: Features trigger and echo pins for straightforward interfacing with microcontrollers, Arduino boards, and other electronic devices, simplifying integration into projects.
• Compact Design: With dimensions of 45mm x 20mm x 15mm, the HC-SR04 sensor module is compact and lightweight, enabling easy installation and integration into space-constrained setups.
• Fast Response Time: Provides quick and accurate distance measurements, thanks to its fast response time, enabling rapid feedback and control in real-time systems.
• Cost-Effective Solution: Offers a cost-effective solution for distance measurement needs, making it accessible to hobbyists, educators, and professionals on a budget.
• Robust Construction: Built with durable materials and components, ensuring long-term durability and stable performance in various environmental conditions.

Overall, the HC-SR04 Ultrasonic Sensor Module combines advanced features, ease of use, and affordability, making it an ideal choice for a wide range of distance sensing and measurement projects.

SR04 Ultrasonic Sensor Pinout

This Module has 4 pins:

• VCC: Module power supply – 5V
• Trig: Trigger pin for sending ultrasonic waves
• Echo: produces a pulse when the ultrasonic waves are sent and stays High until they’re reached back to the sensor
• GND: Ground

You can see the pinout of this module in the image below.

HC-SR04 Ultrasonic (US) sensor is a 4 pin module, whose pin names are Vcc, Trigger, Echo and Ground respectively. This sensor is a very popular sensor used in many applications where measuring distance or sensing objects are required. The module has two eyes like projects in the front which forms the Ultrasonic transmitter and Receiver. The sensor works with the simple formula

Distance = Speed × Time