Need help with Reed Switch and it's functioning (What is DD in it?)

Yash_LFC99:
even after the right coding,

Well we only have your word for that, and that the circuit's the same as in the Instructable.

You should copy YOUR code to a post here, along with a decent photo and sketch of YOUR circuit.

Have you tried with a circuit like that Instructable, but instead of the switch just use a piece of wire to make/break the circuit? That way, you'll check that the circuit apart from the switch is ok, and the code's right.

reed module short.GIF

I don't have clipping wires

I'm sure you can find some wire somewhere and just twist them on, or get someone to hold them if you ran out of hands.

reed module short.GIF