const int LED = 12;
int brightness = 0;
int fadeAmount = 20;
void setup() {
Serial.begin(9600);
pinMode(LED, OUTPUT);
}
void loop() {
analogWrite(LED, brightness);
brightness += fadeAmount;
if (brightness <= 0 || brightness >= 255){
fadeAmount = -fadeAmount;
}
int value = analogRead(A0);
float voltage = value * (5.0 / 1023);
Serial.println(voltage);
delay(15);
}