hello
this little test code makes the led goes fully on when its dark
and off when its light, in reverse.
and i want to set a min and max lvl, so when the lvl are below(or abow) X the led goes fully on,
and when its abow(or below) X the leds go fully off,
and anything in between is dimmed according to light in the room.
however, now this works like a on / off switch.
on when covered, off when not, nothing in between.
#define photoSensorPin A0
void setup()
{
Serial.begin(9600);
}
void loop() {
int val = analogRead(photoSensorPin);
val = map(val, 100, 900, 0, 255);
if(val < 50) {
val = 0;
}
else if(val <800) {
val = 255;
}
analogWrite(9, 255-val);
Serial.println(val);
// Serial.println(photoSensorPin);
delay(50);
}