Hi all. I'm currently working on a project that requires me to place a tactile switch a sizable distance away from my microcontroller (let's ball park 10 meters for discussions sake). Should I be worried about an interference caused by running such long wires and are there any precautions or steps I can take to eliminate any complications? Thanks for the help in advance!
For starters, twist the wires as Gertlex
said (3..4 twists/inch) and keep the impedance as low as possible (i.e. make your pull up or- down resistor as low value as current drain allows).
Whether you'll need to do more is a question on the electrical environment it will be used in, but if you run into problems with the above methods in place, "current signalling" will only take a few extra components.