Digital Display for HC-SR04 Ultrasonic Distance Measurement Control Board

The primary control chip of the digital display for the HC-SR04 Ultrasonic Distance Measurement Control Board is an 8 bit MCU, which can be used for distance measurement and performance testing of the ultrasonic module. Additionally, it supports digital tube displays and serial port displays.

Features:

• High-performance STM8S103 microprocessor on board.
• Featuring a tube display that is digital.
• Data output from a serial port.
• Reliable Measurement 3-400 cm is the distance.
• Unit of Display: cm.
• Maximum error: 5 volts.
• Size of board: 36 x 25 x 12 mm.
• 5V power interface for VCC and GND.
• White, 2.54 mm 5V power interface socket.
• TX: transmit pin from module serial port.
• RX: Receive Pin for Module Serial Port.
• Preset STM8 programme download port for NRST and SWIN.

Using the Introduction: 
1. A digital tube and serial port can be used to display the measurement distance.
Connect the 5V power source and the ultrasonic module directly to the digital tube display.

2. Serial Port: This is a plug-in ultrasonic module that links the 5V, RX, TX, and GND of the USB to the TTL module. The serial port has a 9600 baud rate and an output format called “D:XXXrn,” where XXX stands for distance in units of cm.

Note:

1. An object’s area must be at least 0.5 square metres, smooth, and highly reflective in order to accurately estimate distance; otherwise, the test result may be impacted.
2. Reliable Measurement Range: 3-400 cm; if it is longer than this, an inaccurate data entry or a 000 display will occur.