I'm building a game where you have to pick and cut the correct wire (out of 8 to choose from) in order to deactivate a 'bomb'.
The wires will be connected between two header sockets such as this (don't know why I missed one out, there should be a wire there):
Does anyone have any ideas as to how I should wire this up?
I'm thinking about maybe measuring the voltage using analog pins but I only have 3 to spare. Ideally, the person setting up the game will be able to choose which wire is the 'safe' wire. If it's easier to wire up I could have a choice of only 3 safe wires.
To clarify, only one wire prevents the bomb blowing up, the others will all activate a digital pin to sound the siren.
HI, which arduino are you using? How many Input/Output pins do you have spare in total, you don't have to measure voltage, just if the wire is high or low.
With 8 digital inputs.
One end of each wire connected to a digital input, with internal pull ups on.
The other end of each wire connected to arduino gnd.
The cut wire will give a HIGH input on its particular input.
You could use random number generator to assign which is the HOT wire.