Help with 12 Button Matrix Keypad

Thread Starter


Joined Feb 16, 2011
Doing a personal project and need a specific keypad for use in this project. Don't really know much about electronics but I've done a bunch of Arduino stuff previously (I'm sure that just make me dangerous).

I'm hoping to use this keypad:

I don't have a micro-controller, I was just hopping to get data to go from the keypad to an RS232 port. Is this possible?

Could I use something like this:

Or is an intermediary micro-controller absolutely required for something like this.


John P

Joined Oct 14, 2008
You could do what you're proposing, but it would take a pile of logic chips. Are you sure you wouldn't prefer to use a processor?