kenwood120s:
So, if you put 5V and ground on, what reading do you get on the DO pin (measured to ground) with the switch in its normal position and activated by the magnet?
Thanks for your answer. It doesn't make a difference. The LED just keeps glowing. Nothing to show.
And yes, I'll try clipping a few wires to the +be and -ve of the Reed Switch and try it. I've to go to my college to try it because I don't have clipping wires. I'll report the readings later.
But it's really, really weird that even after the right coding, I'm just getting a glowing LED all the time.