/*
* AnalogInput_Serial_Out
  BJ Furman
  01APR2010
 Demonstrates analog input by reading an analog sensor (pot) on analog pin 1 and
 turns on and off the blue LED on pin 6 at a rate proportional to the pot voltage:
 higher voltage, faster blinking; lower voltage, slower blinking. 
 The amount of time the LED will be on and off depends on
 the value obtained by analogRead(). 
 
 based on the AnalogInput example
 Created by David Cuartielles
 Modified 16 Jun 2009
 By Tom Igoe
 http://arduino.cc/en/Tutorial/AnalogInput
*/

#define MAX_DELAY_TIME 1000  // max delay in ms
#define MIN_DELAY_TIME 10  // min delay in ms
#define MAX_POT_VALUE 855  // max pot reading
#define MIN_POT_VALUE 0  // min pot reading

const byte potPin = 1;    // potentiometer output on pin 1
const byte ledPin = 6;  // blue LED on pin 6
unsigned int potVoltage = 0;  // pot voltage value
unsigned int delay_ms;

void setup() {
  // declare the ledPin as an output, potPin as an input:
  pinMode(ledPin, OUTPUT);
  pinMode(potPin, INPUT);
  // initialize serial communications at 9600 bps:
  Serial.begin(9600); 
}

void loop() {
  // read the value from the sensor:
  potVoltage = analogRead(potPin);    
  // print the results to the serial monitor:
  Serial.print("sensor = " );
  Serial.print(potVoltage);  
  Serial.print("  delay, ms = " );     
  Serial.println(delay_ms);  // print delay value and end-of-line
  // map the pot voltage into a proportional delay
  delay_ms = map(potVoltage,MIN_POT_VALUE,MAX_POT_VALUE,MIN_DELAY_TIME,MAX_DELAY_TIME);
  // turn the LED on
  digitalWrite(ledPin, HIGH);  
  // program waits for <potVoltage> milliseconds:
  delay(delay_ms);          
  // turn the LED off:        
  digitalWrite(ledPin, LOW);   
  // program waits for <potVoltage> milliseconds:
  delay(delay_ms);                  
}