Convert a keypad into a large single switch? Answered
I need a simple switch with a large footprint to light up an LED bulb. I was thinking to use a 12 or 16 key membrane keypad or maybe an old keyboard keypad and rig it for this purpose but I've never used either of them for anything like this.
My switch will be DC momentary switch with probably not more than 3.5V maybe 6V running through it off a battery. To make the entire keypad a sort of big single switch, would it be a simple matter of gathering all the positive wires from each of the keys together into one common wire and do the same with the negative wires or, maybe they have one ground wire? Then if any of the individual switches get pressed, will the switch activate ok? If so, if two or more of the keys are pressed at the same time, will that cause a problem, like a short or over heating?
Please let me know. Thank you so much!!!