Multiple Switching Help!

[Nickname]

Hi
I am currently making a projected, but i have come to a hault. I need about  10 switches, But when i hit one switch i want the others to turn off.
But the thing is it can not be mechanical because the footswitches need to be 10 cm apart.
THis picture will explain more
thnaks
Nick

[audioguru]

Hi Nickname,
Welcome to our forum. ;D
You could use a flip-flop for each switch. Pushing one button would Set its flip-flop and Reset the rest of them through a coupling capacitor to each one. You would need a simple circuit to reset them all when power is first applied. A CD4013 has 2 flip-flop circuits in it. It has very low output power but can drive a transistor that can do what you want. ;D

[Nickname]

Wow thnx, i will read up on that.
Good i love experts, hehehe
Nick  :)

[MP]

I would use a micro and connect momentary push button switches to the port pins. It would be a simple matter of reading the port and opening and/or closing any multiples of switches from this information. For example, we would be looking for a 0, 1, 2, 4, 8, 16, 32, etc on the port and opening switches 1, 2, 3, 4, etc consecutively. With this scenario, you could also program special setups if needed.

How would you do this with 4013s audioguru? I am curious of the parts count.

MP

[audioguru]

Yeah, It's best done with a micro. Using flip-flop IC's would need an awful lot of gates and stuff to reset the others when one is selected.
The method I thought about would actually also reset the one that is selected! :-[