i want to use like a keypad of some sort as a switch. what i want to do is have a keypad that connects to another switch where if i enter the right code into the keypad, the switch becomes active and i can use it? any1 have a guide on how to do that?

= A Keypad Operated Switch

I'm sure there are many others.

Edit: Like this one - Universal 4-Digit Keypad-Operated Switch

do those do what i want to do? like have power coming to the keypad switch, enter the code, the keybad switch sends the power to a push button switch which operates a device.

looking at the first link, would the second push button switch connect to Q5?

also, instead of those links u posted, do u have one where i can just use a breadboard instead of using a stripboard/veroboard or PCB

you can convert a schematic to breadboard or veroboard in several ways including:

PSpice circuit simulator
Stripboard magic
Using your mental powers

well those links that were posted, where would i connect the push button switch to?
also, where can i grab the keypad at? it says something with like 13 contacts ??

i dont want a veroboard, i want a breadboard

also, with stripboard magic, how do i design this circuit:
http://uk.geocities.com/ronj_1217/al1/fourd.html

^^that is the one that looks like it wil do what i want

anybody?

Find a old ford crown victoria / Grand Marquis, grab the keypad, as i believe from what i observed, its a keyboard

i think it'd be easier to just do that circuit by using your head instead of trying to learn stripboard magic to produce an automated layout that might not even be better than what you could achieve by hand

here's a good guide on the basic principle of schematic to breadboard conversion
http://www.kpsec.freeuk.com/breadb.htm

you could convert from the veroboard to stripboard even easier

u think it will work hardnrg? where would i conect the push button switch to on the keypad?
would this keypad work:
http://www.allelectronics.com/cgi-bin/item...ON_KEYPAD_.html

a relay is an electromagnetic mechanical switch... the keypad circuit doesn't "send power" anywhere, when you enter the correct code it deactivates the relay which switches to the off position, then 12V will be present at the N/C pin(s) of the relay... and you have 0v... put a switch and a 12v fan in series in between

all you are doing is putting two switches in series, the first switch being the relay

what do i need a 12v fan for? and could u elaborate of where exactly i put it in "between". im terrible with circuits lol

you put the code in, the relay switched to the n/c (off) position, you can then use the switch to operate ANYTHING... i used a fan as an example