//CODING 1
/*int LED[5] = {3,10,11,12,13};
int valueanalog = 0;//initilize 0 mula2
void setup()
{
 for (int i=1;i<=4;i++)// cara terbaru guna For Loop
 {
 pinMode (LED[i],OUTPUT);
 }
}
void loop()
 {
 valueanalog = analogRead(A0); //range decimel 0-1023, 10 bit
 if(0<valueanalog && valueanalog<300)
 {
 digitalWrite (LED[1],HIGH);digitalWrite (LED[2],LOW);
 digitalWrite (LED[3],LOW);digitalWrite (LED[4],LOW);
 }
 else if(299<valueanalog && valueanalog<600)
 {
 digitalWrite (LED[1],LOW);digitalWrite (LED[2],HIGH);
 digitalWrite (LED[3],LOW);digitalWrite (LED[4],LOW);
 }
 else if(599<valueanalog && valueanalog<900)
 {
 digitalWrite (LED[1],LOW);digitalWrite (LED[2],LOW);
 digitalWrite (LED[3],HIGH);digitalWrite (LED[4],LOW);
 }
 else
 {
 digitalWrite (LED[1],LOW);digitalWrite (LED[2],LOW);
 digitalWrite (LED[3],LOW);digitalWrite (LED[4],HIGH);
 }
 } */

//==========================================================================================

//CODING 2
/*int LED[5] = {3,10,11,12,13};
int valueanalog = 300; //initilize 0 mula2
int i,y;
void setup()
{
 for (int i=1;i<=4;i++)// cara terbaru guna For Loop
 {
 pinMode (LED[i],OUTPUT);
 }
}
void loop()
 {
 y = analogRead(A0); //sensorValue akan dapat nilai 0-1023,10 bit
 for (int i=1;i<=4;i++)// cara terbaru guna For Loop
 {
 digitalWrite (LED[i],HIGH);
 delay(valueanalog);
 digitalWrite (LED[i],LOW);
 }
 }*/

//========================================================================================

//CODING 3 
/*#include <LiquidCrystal.h>
// RS E D4 D5 D6 D7
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
int LED[5] = {3,10,11,12,13};
int valueanalog = 0;
void setup()
{ // C R
 lcd.begin(16, 2);
 lcd.setCursor(0, 0);
 lcd.clear();// before anything, clear the LCD
 for (int i=1;i<=4;i++)// cara terbaru guna For Loop
 {
 pinMode (LED[i],OUTPUT);
 }
}
void loop()
 {
 valueanalog = analogRead(A0); //range decimel 0-1023.
 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print(valueanalog);
 delay(500);
 //****************** 
 }*/
 //========================================================================================

 //CODING 4 
/*#include <LiquidCrystal.h>
// RS E D4 D5 D6 D7
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
int LED[5] = {3,10,11,12,13};
int valueanalog = 0;
int oldvalue=0;
void setup()
{ // C R
 lcd.begin(16, 2);
 lcd.setCursor(0, 0);
 lcd.clear();// before anything, clear the LCD
 for (int i=1;i<=4;i++)// cara terbaru guna For Loop
 {
 pinMode (LED[i],OUTPUT);
 }
}
void loop()
 {
 valueanalog = analogRead(A0); //range decimel 0-1023.
 if(valueanalog!=oldvalue) //TRUE if valueanalog TAK SAMA DGN oldvalue
 {
 lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print(valueanalog);
 delay(500);
 oldvalue = valueanalog; //store the new value
 //**************
 } 
 }*/

 //========================================================================================

//CODING 5
#include <LiquidCrystal.h>
// RS E D4 D5 D6 D7
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
int LED[5] = {3,10,11,12,13};
int valueanalog = 0;
int oldvalue=0;
float voltage;

void setup()
{ // C R
 lcd.begin(16, 2);
 lcd.setCursor(0, 0);
 lcd.clear();// before anything, clear the LCD
 for (int i=1;i<=4;i++)//
 {
 pinMode (LED[i],OUTPUT);
 }
}
void loop()
{
 valueanalog = analogRead(A0); //range decimel 0-1023.
 // Rescale to potentiometer's voltage (from 0V to 5V):
 voltage = floatMap(valueanalog, 0, 1023, 0, 5);
 if(voltage!=oldvalue) //TRUE only if there is any changes in value
 {
 lcd.clear();
 lcd.setCursor(0, 0);
 String stringOne = "Voltage: ";
 String stringTwo = "V";
 String stringThree = stringOne + voltage + stringTwo;
 lcd.print(stringThree);
 delay(500);
 oldvalue = voltage; //store the new value
 }
}
//function definition baru untuk PROSES data.
// (dataNakProses, dataMinAsal, dataMaxAsal, dataMinBaru, dataMaxBaru)
float floatMap(float x, float in_min, float in_max, float out_min, float
out_max) //process value
{
 return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}