#include <Arduino.h>

/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.
 
  This example code is in the public domain.
 */
 
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);    
}

// the loop routine runs over and over again forever:
void loop() {
	int sensorValue = analogRead(A0); // Lit la valeur sur le pin A0
	digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
	delayMicroseconds(exp(sensorValue/100)*2); // Laisse la LED allumée quelques 10ièmes de millisecondes
	digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
	delay(5);               // Éteint la LED pour 5 millisecondes
}