I have been working on controlling some relays with microswitches for a can crusher I am building. I have successfully hooked up a single switch using pull up and pull down resistors both internal and external and it works exactly how intended in any configuration. The problem comes as soon as I wire another switch. I simply duplicate the circuit and I end up with all kinds of crazy behavior relays buzzing, interference from my hands when about to touch the switch, etc. I have tried all combinations of pins and circuit configurations, works geat with one switch but fails when another switch is added.
So you are missunderstanding something, however as to what it is hard to tell with such scant details, so post the code you are running and a schematic of how you have wired it up. Say what it does and what you think it should do
hooked up a single switch using pull up and pull down resistors both internal and external and it works exactly how intended in any configuration.
A drawing will help both us and you.
Lefty