I've seen the other threads about this through search but I still don't really know how to make one. Can anyone tell me a step-by-step how to do this? I know there are four wires in the RJ11 cord and I'll need a 10K resistor, and a momentary switch. One of the threads had a diagram but I have no idea how to read that... Sorry I'm a bit of a newb when it comes to electrical stuff. We only had one class of electrical engineering in my aerospace program!
Any help would be appreciated!