Arduino script for detecting three analog potentiometer inputs and output four LEDs: red, green, blue, and RGB

leos-twisty-toy.ino

// Pin declarations
int potPinR= A0; // Declare potPinR to be analog pin A0
int potPinG= A1; // Declare potPinG to be analog pin A1
int potPinB= A2; // Declare potPinB to be analog pin A2
int LEDPinR= 9;  // Declare LEDPinR to be arduino pin 9
int LEDPinG= 10; // Declare LEDPinR to be arduino pin 10
int LEDPinB= 11; // Declare LEDPinR to be arduino pin 11

// Variables
int readValueR;  // Use to store value from red potentiometer
int writeValueR; // Use to write value to red LED
int readValueG;  // Use to store value from green potentiometer
int writeValueG; // Use to write value to green LED
int readValueB;  // Use to store value from blue potentiometer
int writeValueB; // Use to write value to blue LED
 
// I/O declarations
void setup() {
  pinMode(potPinR, INPUT);   //set potPinR to be an input
  pinMode(potPinG, INPUT);   //set potPinG to be an input
  pinMode(potPinB, INPUT);   //set potPinB to be an input
  pinMode(LEDPinR, OUTPUT);  //set LEDPinR to be an OUTPUT
  pinMode(LEDPinG, OUTPUT);  //set LEDPinG to be an OUTPUT
  pinMode(LEDPinB, OUTPUT);  //set LEDPinB to be an OUTPUT
  Serial.begin(9600);        // turn on Serial Port
}
 
// Run a loop; 
void loop() {
  readValueR = analogRead(potPinR);        // Read the voltage from the red potentiometer
  writeValueR = (255./1023.) * readValueR; // Calculate the write value for the red LED (between 0 and 255)
  analogWrite(LEDPinR, writeValueR);       // Write the value to the red LED
 
  readValueG = analogRead(potPinG);        // Read the voltage from the green potentiometer
  writeValueG = (255./1023.) * readValueG; // Calculate the write value for the green LED (between 0 and 255)
  analogWrite(LEDPinG, writeValueG);       // Write the value to the green LED
 
  readValueB = analogRead(potPinB);        // Read the voltage from the blue potentiometer
  writeValueB = (255./1023.) * readValueB; // Calculate the write value for the blue LED (between 0 and 255)
  analogWrite(LEDPinB, writeValueB);       // Write the value to the blue LED
 
  // Print values in the terminal to see what's happening
  Serial.print("LED write: ");
  Serial.print("\t");
  Serial.print(writeValueR);
  Serial.print("\t");
  Serial.print(writeValueG);
  Serial.print("\t");
  Serial.println(writeValueB);
}