My project is traffic lights that with turn on a specific LED according to the light if the phototesistor and it wont turn on even one LED

[TomGeorge]

Hi, @caniaskyouaquestion

Why didn't you keep going with this thread?

I can't understand this and its driving me crazy. Please help me

//Automatic Nightlight const int LED=9; const int LIGHT=0; const int MIN_LIGHT=200; const int MAX_LIGHT=900; int val = 0 void setup() { pinMode(LED,OUTPUT); } void loop(){ val = analogRead(LIGHT); val = map(val,MIN_LIGHT, MAX_LIGHT, 255,0); val = constrain(val,0,255); analogWrite(LED,val); }

Tom...