Digital Display for HC-SR04 Ultrasonic Distance Measurement Control Board adopts 8 bit MCU as the main control chip; it can be applied in distance measurement, testing HC-SR04 ultrasonic module performance. And it supports serial port display and digital tube display.Features :Onboard STM8S103 high-performance microprocessor.With digital tube display.Serial port data output.Valid Measurement Distance: 3-400cm.Display Unit: cm.Max Error: 5V.Board Size: 36 x 25 x 12 mm.VCC, GND: 5V power interface.2.54mm White Socket: 5V power interface.TX: module serial port transmits pin.RX: module serial port receive pin.NRST, SWIN: preset STM8 program download port.Using Introduction:-1. The measurement distance can be displayed via a digital tube and serial port. Digital Tube Display: directly plug in the ultrasonic module, connect 5V power. 2. 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:XXXrn; XXX represents distance, unit is cm.Notice:-1. When measuring the distance, the area of a measured object should be no less than 0.5 square meters, and it should be smooth and has strong reflectivity; otherwise, it will affect the test result. 2. Valid Measurement Distance: 3-400cm; if longer than this range, it will lead to incorrect data or 000 display. (This Package does not include the HC-SR04 ultrasonic sensor)* product image for illustration purposes only. actual product may vary.

