Digital Display for HC-SR04 Ultrasonic Distance Measurement Control Board

HC-SR04 Ultrasonic Distance Measurement Display Module

The HC-SR04 Ultrasonic Distance Measurement Display Module is a compact and reliable solution for real-time distance measurement applications. Powered by the STM8S103 microcontroller, this board works seamlessly with the HC-SR04 ultrasonic sensor, providing accurate distance readings through an onboard digital display as well as serial communication output. It is ideal for robotics, automation systems, obstacle detection, and distance monitoring projects.

Key Features

• Built-in STM8S103 microcontroller for stable and accurate performance.
• Supports both digital LED display and UART serial data output.
• Measures distances from 3cm to 400cm.
• Displays readings directly in centimeters (cm).
• Serial output available via TX/RX interface for integration with microcontrollers and PCs.
• Compact and lightweight design for easy project integration.

Specifications

• Operating Voltage: 5V DC
• Measurement Range: 3cm – 400cm
• Display Unit: Centimeters (cm)
• Communication Interface: UART Serial
• Baud Rate: 9600bps
• Output Format: D:XXX\r\n
• Dimensions: 36mm × 25mm × 12mm

How to Use

1. Connect the HC-SR04 ultrasonic sensor to the module.
2. Supply 5V DC power to the board.
3. Distance readings will be displayed automatically on the onboard digital display.
4. For serial monitoring, connect VCC, GND, TX, and RX to a compatible USB-to-TTL converter and read the data through a serial terminal.

Important Notes

• For best accuracy, the target object should have a smooth, reflective surface with sufficient size.
• Readings beyond 400cm may be inaccurate or display “000”.

Package Contents

• 1 × HC-SR04 Ultrasonic Distance Measurement Display Module