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1. hi, i’m currently working on a small project and i tried to write the code for the same circuit, could you please post the code. thx!

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2. /*
   * Code for making one potentiometer control 3 LEDs, red, grn and blu, or one tri-color LED
   * The program cross-fades from red to grn, grn to blu, and blu to red
   * Clay Shirky
   */

   // INPUT: Potentiometer should be connected to 5V and GND
   int potPin = 3; // Potentiometer output connected to analog pin 3
   int potVal = 0; // Variable to store the input from the potentiometer

   // OUTPUT: Use digital pins 9-11, the Pulse-width Modulation (PWM) pins
   // LED’s cathodes should be connected to digital GND
   int redPin = 9; // Red LED, connected to digital pin 9
   int grnPin = 10; // Green LED, connected to digital pin 10
   int bluPin = 11; // Blue LED, connected to digital pin 11

   // Program variables
   int redVal = 0; // Variables to store the values to send to the pins
   int grnVal = 0;
   int bluVal = 0;

   void setup()
   {
   pinMode(redPin, OUTPUT); // sets the pins as output
   pinMode(grnPin, OUTPUT);
   pinMode(bluPin, OUTPUT);
   }

   // Main program
   void loop()
   {
   potVal = analogRead(potPin); // read the potentiometer value at the input pin

   if (potVal < 341) // Lowest third of the potentiometer's range (0-340) { potVal = (potVal * 3) / 4; // Normalize to 0-255 redVal = 256 - potVal; // Red from full to off grnVal = potVal; // Green from off to full bluVal = 1; // Blue off } else if (potVal < 682) // Middle third of potentiometer's range (341-681) { potVal = ( (potVal-341) * 3) / 4; // Normalize to 0-255 redVal = 1; // Red off grnVal = 256 - potVal; // Green from full to off bluVal = potVal; // Blue from off to full } else // Upper third of potentiometer"s range (682-1023) { potVal = ( (potVal-683) * 3) / 4; // Normalize to 0-255 redVal = potVal; // Red from off to full grnVal = 1; // Green off bluVal = 256 - potVal; // Blue from full to off } analogWrite(redPin, redVal); // Write values to LED pins analogWrite(grnPin, grnVal); analogWrite(bluPin, bluVal); }

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   1. And here is the (dim blue) fix.. i made it white for you 😉

      /*
      * Code for making one potentiometer control 3 LEDs, red, grn and blu, or one tri-color LED
      * The program cross-fades from red to grn, grn to blu, and blu to red
      * Clay Shirky
      */

      // INPUT: Potentiometer should be connected to 5V and GND
      int potPin = 3; // Potentiometer output connected to analog pin 3
      int potVal = 0; // Variable to store the input from the potentiometer

      // OUTPUT: Use digital pins 9-11, the Pulse-width Modulation (PWM) pins
      // LED’s cathodes should be connected to digital GND
      int redPin = 9; // Red LED, connected to digital pin 9
      int grnPin = 10; // Green LED, connected to digital pin 10
      int bluPin = 11; // Blue LED, connected to digital pin 11

      // Program variables
      int redVal = 0; // Variables to store the values to send to the pins
      int grnVal = 0;
      int bluVal = 0;

      void setup()
      {
      pinMode(redPin, OUTPUT); // sets the pins as output
      pinMode(grnPin, OUTPUT);
      pinMode(bluPin, OUTPUT);
      }

      // Main program
      void loop()
      {
      potVal = analogRead(potPin); // read the potentiometer value at the input pin
      if (potVal < 10) // Lowest third of the potentiometer's range (0-340) { potVal = (potVal * 3) / 4; redVal = 255; grnVal = 255; bluVal = 255; } else if (potVal < 341) { potVal = (potVal * 3) / 4; // Normalize to 0-255 redVal = 256 - potVal; // Red from full to off grnVal = potVal; // Green from off to full bluVal = 1; // Blue off } else if (potVal < 682) // Middle third of potentiometer's range (341-681) { potVal = ( (potVal-341) * 3) / 4; // Normalize to 0-255 redVal = 1; // Red off grnVal = 256 - potVal; // Green from full to off bluVal = potVal; // Blue from off to full } else // Upper third of potentiometer"s range (682-1023) { potVal = ( (potVal-683) * 3) / 4; // Normalize to 0-255 redVal = potVal; // Red from off to full grnVal = 1; // Green off bluVal = 255 - potVal; // Blue from full to off } analogWrite(redPin, redVal); // Write values to LED pins analogWrite(grnPin, grnVal); analogWrite(bluPin, bluVal); }

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3. skema

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