Microduino Ultrasonic ranging-OLED display distance

Language	English

Objective This tutorial will teach you using the ultrasonic sensor to measure distance and displays on Microduino OLED. Equipment Microduino-Core Microduino-FT232R Microduino-Cube-S1 Microduino-OLED Other equipment USB cable one Ultrasonic sensor one Schematic 文件:Microduino超声波OLED显示原理图.jpg 600px Program Refer to UltrasonicOLED The following is the distance measurement algorithm: digitalWrite(TrigPin, LOW); //Send a pulse to TrigPin delayMicroseconds(2); digitalWrite(TrigPin, HIGH); delayMicroseconds(10); digitalWrite(TrigPin, LOW); cm = pulseIn(EchoPin, HIGH) / 58.0; //Convert the timer to distance (cm) (The propagation of sound speed is 340 m/s) cm = (int(cm * 100.0)) / 100.0; //Keep two decimal places Debug Step 1：Stack all the required Microduino module, as follows: 文件:Microduino超声波OLED显示连接图.jpg 600px Step 2：Compile the program and download it. Step 3：Run program, put a object in front of sensor, then move it, observe the OLED's value. 文件:Microduino超声波OLED显示测距图.jpg 600px Result OLED will display the distance between sensor and object. Video http://v.youku.com/v_show/id_XNzAxMDc5Mjcy.html