I am a very experienced programmer who has a little bit of electronics knowledge. Basically I've fooled around in the past with some simple switches, lights and motors and maybe a resistor or two.
I'm looking to hook my netduino 2 plus to a normally open circuit and trigger it to bang a web service on my pc when the circuit closes. I have the code roughed out using the on board button and now I want to code/test just using a short wire or switch before I hook it up to the larger circuit.
I've done a good bit of searching and found this http://arduino.cc/en...utton_schem.pngwhich is part of this tutorial
I just want to make sure before I try this (assuming I hook everything up properly and protect against static and all that) - if I hook a 10k resistor between digital input 1 and ground as a pull "down"(? or up? but I think down?) and then have a switch that connects the pin to 5v, I won't fry anything, is that right?
Do I have to have the pin set to the proper mode when I connect the wire in order to avoid frying something? In other words if I have a bug and the pin's set to output but I put 5v on it, will it fry then?
Can I uses 3.3v, is that any safer / better?