Keypad Connection

Ben · Post by **Ben** » Mon Sep 17, 2007 3:55 pm

I would like to use the Keypad module but can't find any information about how to connect one. Is there a diagram somewhere?

Thanks, Ben

David Barker · Post by **David Barker** » Wed Sep 19, 2007 2:09 pm

You can download the PROTON development board manual in PDF from

http://www.compile-it.com/Proton/ProtonDev.pdf

I use this board quite a lot. Most of the schematics have been removed from the web download version of the manual, but on page 12 there is a keypad schematic which works fine...

Ben · Post by **Ben** » Wed Sep 19, 2007 2:20 pm

Thanks David

Is it possible to get the keypad to work on a PORT other than PORTB?

David Barker · Post by **David Barker** » Wed Sep 19, 2007 2:26 pm

PORTB is quite a good place to put buttons and keypads as it supports weak pullups and interrupt on change...

TimB · Post by **TimB** » Wed Sep 19, 2007 5:02 pm

Really sorry as soon as I saw the post I did a schematic but found I could not post it. Then Dave said send him the jpeg and I'm never at the right PC

Really sorry I will do it now

David Barker · Post by **David Barker** » Wed Sep 19, 2007 5:13 pm

Thanks for that Tim, I've uploaded it...

http://www.sfcompiler.co.uk/wiki/uploads/keypad.jpg