Switch triggers ALL connected inputs?

Community PCB Design
1

Hello,

I can’t figure out what could be wrong with this design… in my head it should work, but in the real world it doesn’t… why? :slight_smile:

http://dl.dropbox.com/u/16857922/switch_component.png

2

All the switches are connected together. You should have a pull-up for each switch.

3

Ok, so each switch needs it’s own resistor…

If I replace the “long yellow cables” with resistors they should stay off?

Maybe I’m think to much in terms of direction or flow… or maybe I’m thinking wrong. :stuck_out_tongue:

Thanks!

4

Gah… it’s so simple to see now. Can’t believe I missed it before. :slight_smile:

Of course the current goes through all switches because they are the least resistance path… doh!

Thanks Leon!