// software

int brightness = 0; // уставливаем начально значение яркости

int maxBrightness = 0;

int fadeAmount = 5; // fade multipler

int color[3] = {255,255,255}; // global color


// hardware pins

int sensorPIR1 = 2; //Pir 1

int pot1 = A0;      //Potentionometer 1, ON/OFF and brightness control

int led_R = 5;
int led_G = 4;
int led_B = 3;


void setup()  {
  pinMode(led_R, OUTPUT);
  pinMode(led_G, OUTPUT);
  pinMode(led_B, OUTPUT);

  pinMode(pot1, INPUT);
}


void loop()  {

maxBrightness = analogRead(pot1)/4;



analogWrite(led_R, brightness);
analogWrite(led_G, brightness);
analogWrite(led_B, brightness);

    if (brightness > maxBrightness || brightness == maxBrightness) {
    brightness = maxBrightness;
    }

    else if (digitalRead(sensorPIR1) == HIGH) {
    brightness = brightness + fadeAmount;
    }


    if (brightness < 0 || brightness == 0) {
    brightness = 0;
    }

    else if (digitalRead(sensorPIR1) == LOW) {
    brightness = brightness - fadeAmount;
    }

delay(50);

}