Switches

I had another meeting with Bill from the Electronics school yesterday. Following on from the method I think I’m gonna use now with all my different components, I wanted to find out how I could find out if the switch had been pressed or not. It doesn’t look as though it’s gonna be as straightforward as I had hoped. The switch has a piece of carbon at the bottom of it (see the photo below) which when pressed against the black squiggly line (sorry for the technical term there) in the gold patch (see the 2nd photo) completes the circuit and makes the bulb glow and the buzzer buzz. Bill reckons if I didn’t want the bulbs to glow as well it would be fairly easy to do what I want but the bulbs are complicating matters.

He suggested that I get 4 x Photo Mos switches, 1 for each switch, then hack into the circuit board to connect them up and then in turn connect them to my wiring board or to the pulse circuits – which he suggested would be the better option. So, another trip to Maplins is needed which is fine but the hacking into the circuit board is gonna be interesting.