> >Hi All, > >I'm not tech savy enough to create it, but I know the project is pretty >simple. Here is what I want to create >1.) Flexible and thin (membrane) numeric keypad. Small > >2.) connects to my libretto through either the PCMCIA /USB converter or >port rep serial or PS/2 jack > >I've got a nice ultra thin Adesso 17 key keypad, but the buttons stick up >to high (and its low profile) and >its keyclicks are louder than I'd like. > >What would be ideal is a small cell phone or calculator keypad. Soft rubber >keys and basically silent. >Once removed from the housing it would be somewhat flexible and low >profile. > >Does anybody out there have any ideas or help on this project?? > >What would also work for me would be a cut down version of those >"flexible/waterproof" keyboards. The best thing is to find a suitable keypad first, and then interface it to a suitable microcontroller. Most of these keypads are designed with connections to the rows and columns brought out to a connector. If you aren't into programming the keypad software yourself, you should be able to find some suitable code on the web. It's quite trivial, anyway. You will also need an interface to the Libretto - the PS2 port would probably be best as it's quite easy to interface to a controller, and has a 5V supply on one of the pins. Software for doing this is floating around, also. I could probably dig out some routines suitable for the AVR or PIC for you, without too much trouble. Regards, Leon -- Leon Heller, G1HSM Tel: +44 1327 359058 Email:My web page: http://www.geocities.com/leon_heller My low-cost Altera Flex design kit: http://www.leonheller.com _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp -- Subscription/unsubscription/info requests: send e-mail with subject of "subscribe", "unsubscribe", or "info" to
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