#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 11, 10, 9, 8); //data untuk 
double ACSoffset=2.5;
double sensor=0.205;
double current=0;
double voltage=0;
int set_time(100);
char set_current(3);
const int relay=7;
const int led=6;
const int PB=5;
String motion;

void setup() {
  Serial.begin (11600);
pinMode(relay, OUTPUT);
pinMode(led, OUTPUT);
pinMode(PB, INPUT);

lcd.begin(20,4);
lcd.setCursor(0,0);
lcd.print("   Current Sensor   ");

lcd.setCursor(0,1);
lcd.print("p = start   s = stop");

Serial.println("ketik 'p' untuk run, dan 's' untuk stop");
}

void loop() {
  unsigned long ACC=millis();
motion = Serial.readString();
double value=analogRead(A0);
voltage=(value*5.0/1023);
current=(voltage-ACSoffset)/sensor;
lcd.setCursor(0,2);
lcd.print("Arus=");
lcd.print(current);
lcd.print(" A"); 

    
  if (digitalRead(led)==LOW && current <= 0.50 ){
 	lcd.setCursor(0,3);
	lcd.print("     Ready      ");
  }
  else{
    lcd.setCursor(0,3);
  	lcd.print("  Over Current  ");
  }
    if (motion=="p" && digitalRead(led)==LOW){
    digitalWrite(relay, HIGH);
    lcd.setCursor(0,3);
    lcd.print("     ACC      ");
    delay(20);
  }

  if (current > 0.50 && current < set_current ){
 	lcd.setCursor(0,3);
	lcd.print("     Running    ");
  }
 if (current > set_current ){
   digitalWrite (relay, LOW);
   digitalWrite (led, HIGH);
 }
 if (motion=="s"){
 	digitalWrite(relay, LOW);
 }
if (motion=="r"){
 	digitalWrite(relay, LOW);
    digitalWrite(led, LOW);
}
}