Simple circuit wiring question.

Factual Questions
1

I am wiring a basic, "solder it yourself kit’ circuit. I don’t know an awful lot about wiring, I’m just following the pretty simplistic instructions.

This particular circuit starts at a small PCB controller that has several leads. What I’m supposed to do it first daisy chain from the “ground” lead on the PCB to the “common” lead on each switch.

Then I’m supposed to wire from each of the other PCB leads to the “Normally Open” lead on each microswitch. (Each switch has 3 leads, the “Common”, the “Normally Open”, and “Normally Closed” -for this purpose I need to use “Normally Open”).,

Now, I want to add a switch into this circuit that isn’t part of the kit. (The switches in the kit are quite large, and for 2 switches I’d like something with a smaller button).

The buttons I want to add have only two leads. My questions are:

  1. Can I add these switches to the circuit?

  2. Which lead would act as “Common” and which as “NO”. Does it matter, really?

2

An alarm switch with three leads can be used as either “normally open” or as “normally closed”. An alarm switch with only two leads is either “normally open” or “normally closed”, it can’t be both.

Your circuit requires “normally open” switches. If you buy two-lead “normally open” switches, it doesn’t matter which of the two leads you use as “common”.

If you buy two-lead “normally closed” switches, your circuit won’t work.

3

Thanks. I forgot to mention that… I am fairly cretain the 2 lead switch I bought is “Normally Open”, so I guess I’m good to go.

I will make one act as common, and one act as NO. Thanks!!