Proximity sensors to pwm  times 4

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hi guys im really new to this world and are struggling with geting the following to work with four LEDs and Fours sensor can anu one help

int ledPin = 9; // LED connected to digital pin 9
int sensorPin = 2; // value read from the sensor
int outputValue = 0; // value output to the PWM (analog out)

void setup() {
Serial.begin(9600);
}

void loop() {

// read the analog input
int analogValue = analogRead(sensorPin);

// NOTE: you should modify following script in according with your project goals, resistors and used sensors.

// Sensors return values from 0 until 1023 but I mapped them from 250 to 900 to get a better visual result.
// The map() method will return us a value from 0 to 255, good PWM values to turn on my LED
outputValue = map(analogValue, 250, 900, 0, 255);

// Some sensors, when their value is near to zero, return a variable value between 2 and 3, creating a loop
// that could generate bad visual effects. To avoid this issue I always turn off the LEd when sensor value is < 5
if (outputValue<5)
analogWrite(ledPin, 0);
else
analogWrite(ledPin, outputValue);

// print the result to the serial monitor
Serial.print(analogValue);
Serial.print(" : ");
Serial.print(outputValue);
Serial.println("----");

// wait 10 milliseconds for the analog-to-digital converter
delay(10);
}

2 
#define N_LEDS 4
const int ledPin [N_LEDS] =  {3, 5, 6, 9};  // LEDs connected to these digital pins
const int sensorPin [N_LEDS] = {2, 3, 4, 5};        
int outputValue = 0;        // value output to the PWM (analog out)


void setup() {
 Serial.begin(9600); 
}

void loop() {
  for (int i = 0; i < N_LEDS; i++ ) {
    // read the analog input 
    int analogValue = analogRead(sensorPin [i]);

    int outputValue = map(analogValue, 250, 900, 0, 255); 

  if (outputValue<5) 
    analogWrite(ledPin[i], 0); 
   else
    analogWrite(ledPin[i], outputValue); 



  // print the result to the serial monitor
  Serial.print(analogValue);
  Serial.print(" : ");
  Serial.print(outputValue);
  Serial.println("----");



  // wait 10 milliseconds for the analog-to-digital converter
  delay(10);
}