Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
Ultrasonic range finder using Amarino Evaluation shield
#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 10, 9, 8, 7);
int TrigPin = 4;
int EchoPin = 2;
void setup()
{
lcd.begin(16, 2);
Serial.begin(9600);
pinMode(TrigPin,OUTPUT);
pinMode(EchoPin,INPUT);
}
void loop()
{
int distance,duration;
digitalWrite(TrigPin,HIGH);//TrigPin prepare high of more than 10us
delayMicroseconds(11);
digitalWrite(TrigPin,LOW);
duration = pulseIn(EchoPin, HIGH);//EchoPin received high start counting until the receiver to the low,return to the count valu
duration = duration/29/2;//Calculating the distance cm
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
lcd.clear();
lcd.print("Distance:");
lcd.print(duration);
Serial.print(duration);//Serial display distance
lcd.print("cm");
Serial.print("cm");
Serial.println();
delay(1000);
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.