Well do you like pickled stuff generally ? How about hard boiled eggs ? <| sep |> Hoping other smart people will find you , recognise you as one of their own and adoptbefriendwhatever . <| sep |> Apologies if these are super basic , but I don ' t know your level of knowledgeexperience . Are you sure your LED is not faulty ? How are you connecting the arduino to the breadboard ? Is it a standalone breadboard , or is it on a prototype shield ? Do you have a voltmeter ? Have you checked at the header pins to make sure the arduino isn ' t damaged ? Are you using the ground rails on the breadboard , or just connecting directly to the LED pins ? . I agree with the poster who asked for pictures . There are a lot of things that you might have not done or assumptions that you might have made if you happen to be very inexperienced . Again , no insult intended , I just don ' t know what level you are at .