Arduino – CLCD with I2C – Ultra Sonic
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#include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); #define trigPin 2 #define echoPin 3 long distances=0; int disM=0; int disC=0; void setup() { lcd.init(); delay(1000); lcd.backlight(); lcd.setCursor(0,0); lcd.print("Distances"); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); Serial.begin(9600); } void loop() { digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); distances=(pulseIn(echoPin, HIGH) / 29.1) / 2.0; if (distances < 500) { disM=distances / 100; disC=distances % 100; Serial.print(disM); Serial.print("m "); Serial.print(disC); Serial.println("cm"); lcd.setCursor(0,1); if (String(disM).length() < 2) { lcd.print(" "); } lcd.print(disM); lcd.print("m "); if (String(disC).length() < 2) { lcd.print(" "); } lcd.print(disC); lcd.print("cm"); } } |