This module adopts 8 bit MCU as main control chip, it can be applied in distance measurement, testing HC-SR04 ultrasonic module performance. And it supports the serial port display and digital tube display. The measurement distance can be displayed via digital tube and serial port.
Digital Tube Display: directly plug in the ultrasonic module, connect 5V power. Serial Port: plug-in ultrasonic module, VCC, TX, RX, GND respectively connects 5V, RX, TX, GND of USB to TTL module; serial port communication baud rate 9600, output format “D : XXX r n”; XXX represents distance, unit is cm
