Difference between revisions of "Microduino Ultrasonic ranging-OLED display distance"

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

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:

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.

Result

OLED will display the distance between sensor and object.

Video