#include <Arduino.h>

#define ANALOG_REG_PIN_1    A0
#define ANALOG_REG_PIN_2    A1
#define ANALOG_REG_PIN_3    A2
#define LED_RED_PIN         9
#define LED_GREEN_PIN       10
#define LED_BLUE_PIN        11

void setup() {
  pinMode(ANALOG_REG_PIN_1, INPUT);
  pinMode(ANALOG_REG_PIN_2, INPUT);
  pinMode(ANALOG_REG_PIN_3, INPUT);
}

void loop() {
  analogWrite(LED_RED_PIN, map(analogRead(ANALOG_REG_PIN_1), 0, 1023, 255, 0));
  analogWrite(LED_GREEN_PIN, map(analogRead(ANALOG_REG_PIN_2), 0, 1023, 255, 0));
  analogWrite(LED_BLUE_PIN, map(analogRead(ANALOG_REG_PIN_3), 0, 1023, 255, 0));
  delay(100);
}