/*
  7segment
 
 Counts from 0 to 9 on a 7 segent display, leaving each number lit for a variable period of time adjusted by a potentiometer or by brightness.
 
 The circuit:
 Connect display as follows, assuming that your display uses the same a-g lettering scheme. 
 Note that I missed out output 3, you are free to repeat this mistake if you like, otherwise adjust accordingly:
 
 a - 1
 b - 2
 c - 4
 d - 5
 e - 6
 f - 7
 g - 8
 common anode - +5V
 
 -then-

 center pin of the potentiometer - analog0
 one side pin (either one) - Gnd
 the other side pin - +5V

 -or-

 +5V to one pin of photocell
 other photocell pin - 10k resistor - Gnd
 same pin as above - analog0
 
 
 Created 26 December 2009
 By Joseph Reeves
 
 http://blogs.thehumanjourney.net/finds
 
 based on the original Blink and AnalogInput tutorials by David Cuartielles
 
 */

int sensorPin = 0;
int sensorValue = 0;
int ledPin1 =  1;
int ledPin2 =  2;
int ledPin4 =  4;
int ledPin5 =  5;
int ledPin6 =  6;
int ledPin7 =  7;
int ledPin8 =  8;


void setup()   {                
  pinMode(ledPin1, OUTPUT);  
  pinMode(ledPin2, OUTPUT);  
  pinMode(ledPin4, OUTPUT);  
  pinMode(ledPin5, OUTPUT);
  pinMode(ledPin6, OUTPUT);  
  pinMode(ledPin7, OUTPUT);  
  pinMode(ledPin8, OUTPUT);  

}  
  
void loop()
{
  
  //0
  
  sensorValue = analogRead(sensorPin);    
  
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, LOW);
  digitalWrite(ledPin6, LOW);
  digitalWrite(ledPin7, LOW);  
  digitalWrite(ledPin8, HIGH);  
  
  delay(sensorValue);
  
  //1

  sensorValue = analogRead(sensorPin);      
  digitalWrite(ledPin1, HIGH);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, HIGH);
  digitalWrite(ledPin6, HIGH);
  digitalWrite(ledPin7, HIGH);  
  digitalWrite(ledPin8, HIGH);  
  
  delay(sensorValue);
  
  //2

  sensorValue = analogRead(sensorPin);      
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, HIGH);
  digitalWrite(ledPin5, LOW);
  digitalWrite(ledPin6, LOW);
  digitalWrite(ledPin7, HIGH);  
  digitalWrite(ledPin8, LOW);  
  
  delay(sensorValue);
  
  //3
 
  sensorValue = analogRead(sensorPin);        
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, LOW);
  digitalWrite(ledPin6, HIGH);
  digitalWrite(ledPin7, HIGH);  
  digitalWrite(ledPin8, LOW);  
  
  delay(sensorValue);  
  
  //4

  sensorValue = analogRead(sensorPin);          
  digitalWrite(ledPin1, HIGH);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, HIGH);
  digitalWrite(ledPin6, HIGH);
  digitalWrite(ledPin7, LOW);  
  digitalWrite(ledPin8, LOW);  

  delay(sensorValue);  
  
  //5

  sensorValue = analogRead(sensorPin);            
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, HIGH);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, LOW);
  digitalWrite(ledPin6, HIGH);
  digitalWrite(ledPin7, LOW);  
  digitalWrite(ledPin8, LOW);  

  delay(sensorValue);  
  
  //6

  sensorValue = analogRead(sensorPin);            
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, HIGH);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, LOW);
  digitalWrite(ledPin6, LOW);
  digitalWrite(ledPin7, LOW);  
  digitalWrite(ledPin8, LOW);  

  delay(sensorValue);  

  //7

  sensorValue = analogRead(sensorPin);            
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, HIGH);
  digitalWrite(ledPin6, HIGH);
  digitalWrite(ledPin7, HIGH);  
  digitalWrite(ledPin8, HIGH);  

  delay(sensorValue);  
  
  //8

  sensorValue = analogRead(sensorPin);            
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, LOW);
  digitalWrite(ledPin6, LOW);
  digitalWrite(ledPin7, LOW);  
  digitalWrite(ledPin8, LOW);  

  delay(sensorValue);  

  //9
  
  sensorValue = analogRead(sensorPin);          
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin4, LOW);
  digitalWrite(ledPin5, HIGH);
  digitalWrite(ledPin6, HIGH);
  digitalWrite(ledPin7, LOW);  
  digitalWrite(ledPin8, LOW);  

  delay(sensorValue);  
}