int led1 = D2;
int sensor = A0;
int tiltSwitch = D3;



void setup() {

pinMode(led1, OUTPUT);
pinMode(tiltSwitch, INPUT);
Serial.begin(9600);

}

void loop() {
    
    int switchRead = digitalRead(tiltSwitch);
    int val = analogRead(sensor);
    int brightness = map(val, 0, 4095, 0, 255);
    
    if (switchRead == HIGH){
        analogWrite(led1, brightness);
        Serial.print(brightness);
        
    }
    else {
        digitalWrite(led1, LOW);
    }

}