Limit switch wiring help

[Supermario]

Originally Posted by Lmackattack

I was surfing eBay and see a lot of people list these micro switches as no/nc


Does it specifically have to be a nc switch or is it just hiw it's wired will determine the nc position?

Some switches have 3 terminals and you can choose NC or NO.
a NC switch is what keeps this circuit simple. Using a NO switch would require more diode fun that you don't need.

Normally closed as to say there is a connection when not touched. when you push on it, power is lost.

heres a switch with choice of no/nc

http://www.robotshop.com/en/micro-co...it-switch.html