Digital Range Finder

Just Do Electronics May 05, 2020

Circuit Diagram :-

Code :-

 
//Prateek 
//www.prateeks.in

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define trigPin 12
#define echoPin 11

#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);

void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
display.begin(SSD1306_SWITCHCAPVCC, 0x3C); 
display.clearDisplay();

}

void loop() {
float duration;
float distance_cm;


digitalWrite(trigPin, LOW); 
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance_cm = (duration/2) / 29.1;


display.setCursor(30,0); //oled display
display.setTextSize(1);
display.setTextColor(WHITE);
display.println("Range Finder");

display.setCursor(10,20); //oled display
display.setTextSize(2);
display.setTextColor(WHITE);
display.println(distance_cm);
display.setCursor(90,20);
display.setTextSize(2);
display.println("cm");

delay(500);
display.clearDisplay();

Serial.println(distance_cm);

}

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