arduino project with relay

how to program arduino with relay for turn on led?

Hi,
Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html

Google arduino relay tutorial

Tom... :slight_smile:

wkhidmuhammad:
how to program arduino with relay for turn on led?

That depends ENTIRELY on how you have it connected together.

Paul

@wkhidmuhammad, please do not cross-post. Threads merged.

This project like 90% in the wiring. At the end of the day, you send a digital write of HIGH or LOW to the relay to turn it on or off

I would say "use the IDE" but that may be too literal an answer :slight_smile: