//declares all the pin connections to the arduino board
const int LED1= 11;
const int LED2= 10;
const int LED3= 9;
const int LED4= 8;
const int LED5= 7;
const int LED6= 6;
const int LED7= 5;
const int LED8= 4;
const int LED9= 3;
const int LED10= 2;
const int potentiometer= A0;

int value=0;

//declares the LEDs as outputs and the potentiometer as inputs
//also creates a Serial Monitor so that we can see what the actually analog value is
void setup()
{
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(LED3, OUTPUT);
pinMode(LED4, OUTPUT);
pinMode (LED5, OUTPUT);
pinMode (LED6, OUTPUT);
pinMode (LED7, OUTPUT);
pinMode (LED8, OUTPUT);
pinMode (LED9, OUTPUT);
pinMode (LED10, OUTPUT);
pinMode (potentiometer, INPUT);
Serial.begin(9600);
}

void loop()
{
value= analogRead(potentiometer);
Serial.println(value);

//all LEDs are off
if (value == 0)
{
digitalWrite (LED1, LOW);
digitalWrite (LED2, LOW);
digitalWrite (LED3, LOW);
digitalWrite (LED4, LOW);
digitalWrite (LED5, LOW);
digitalWrite (LED6, LOW);
digitalWrite (LED7, LOW);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 1 LED
if ((value >0) && (value < 103))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, LOW);
digitalWrite (LED3, LOW);
digitalWrite (LED4, LOW);
digitalWrite (LED5, LOW);
digitalWrite (LED6, LOW);
digitalWrite (LED7, LOW);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 2 LEDs
if ((value >= 103) && (value < 205))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, LOW);
digitalWrite (LED4, LOW);
digitalWrite (LED5, LOW);
digitalWrite (LED6, LOW);
digitalWrite (LED7, LOW);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 3 LEDs
if ((value >= 206) && (value < 308))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, LOW);
digitalWrite (LED5, LOW);
digitalWrite (LED6, LOW);
digitalWrite (LED7, LOW);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 4 LEDs
if ((value >= 309) && (value < 410))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, HIGH);
digitalWrite (LED5, LOW);
digitalWrite (LED6, LOW);
digitalWrite (LED7, LOW);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 5 LEDs
if ((value >= 411) && (value < 512))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, HIGH);
digitalWrite (LED5, HIGH);
digitalWrite (LED6, LOW);
digitalWrite (LED7, LOW);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 6 LEDs
if ((value >= 513) && (value < 615))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, HIGH);
digitalWrite (LED5, HIGH);
digitalWrite (LED6, HIGH);
digitalWrite (LED7, LOW);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 7 LEDs
if ((value >= 616) && (value < 717))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, HIGH);
digitalWrite (LED5, HIGH);
digitalWrite (LED6, HIGH);
digitalWrite (LED7, HIGH);
digitalWrite (LED8, LOW);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 8 LEDs
if ((value >= 718) && (value < 819))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, HIGH);
digitalWrite (LED5, HIGH);
digitalWrite (LED6, HIGH);
digitalWrite (LED7, HIGH);
digitalWrite (LED8, HIGH);
digitalWrite (LED9, LOW);
digitalWrite (LED10, LOW);
}

//lights up 9 LEDs
if ((value >= 820) && (value < 921))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, HIGH);
digitalWrite (LED5, HIGH);
digitalWrite (LED6, HIGH);
digitalWrite (LED7, HIGH);
digitalWrite (LED8, HIGH);
digitalWrite (LED9, HIGH);
digitalWrite (LED10, LOW);
}

//lights up 10 LEDs
if ((value >= 922) && (value < 1023))
{
digitalWrite (LED1, HIGH);
digitalWrite (LED2, HIGH);
digitalWrite (LED3, HIGH);
digitalWrite (LED4, HIGH);
digitalWrite (LED5, HIGH);
digitalWrite (LED6, HIGH);
digitalWrite (LED7, HIGH);
digitalWrite (LED8, HIGH);
digitalWrite (LED9, HIGH);
digitalWrite (LED10, HIGH);
}
}