#include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x3F , 16, 2); const int pinTrig = 8; const int pinEcho = 9; const int kran = 13; int jarak; void setup() { lcd.begin(); Serial.begin(9600); pinMode(pinTrig, OUTPUT); pinMode(pinEcho, INPUT); pinMode(kran,OUTPUT); digitalWrite(kran,LOW); lcd.setCursor(00,00); lcd.print(" BELAJAR LISTRIK "); lcd.setCursor(00,01); lcd.print ("dan ELEKTRONIK"); delay (1500); lcd.clear(); } void loop() { digitalWrite(pinTrig, HIGH); delayMicroseconds(10); digitalWrite(pinTrig, LOW); float durasi = pulseIn(pinEcho, HIGH); jarak =(durasi *0.034)/2; Serial.println (jarak ); if (jarak < 40) { digitalWrite(kran,HIGH); lcd.setCursor(00,00); lcd.print(" TERUS JAGA "); lcd.setCursor(00,01); lcd.print (" KEBERSIHAN " ); } else { digitalWrite(kran,LOW); lcd.setCur...