Do switches need ground pin?

tactile · February 14, 2009, 12:00pm

Hi Folks,

This is probably a very stupid question, but I’m wondering if switches need to have a ground pin? The schematic on the uCApps DIN page shows a ground bus. Is this essential (cheaper tact switches seem to come without ground pins)?

seppoman · February 14, 2009, 12:57pm

Every switch has (at least) two pins. The “GND pin” is the one where you connect GND to. You can choose one of them freely

nILS · February 14, 2009, 8:07pm

…

You can choose one of them freely

It’s generally better to use the left one

tactile · February 15, 2009, 2:05am

Thanks (-_-

_tilted · February 17, 2009, 5:05am

I usually use the other one.

I connect one pin to the DIN board, then i connect the other one to GND.