DPRG List  

[DPRG] Re: 1-wire keypad

Subject: [DPRG] Re: 1-wire keypad
From: montgomery f. tidwell mtidwell at practicalmatters.com
Date: Mon Jul 2 16:56:51 CDT 2001


i contacted Jeff Corr and he said that the image was lost long ago.

i did manage to get something "working", but the data is not very
clean. as i'm pressing a button the values seem random. once pressed
and held one (or two) value(s) are output. as the button is being
released it starts giving random results again.

is this (a) the nature of keypads, (b) an indication that my keypad
is not the best, (c) or there is something that i should be doing
to "clean" up the output, if so what?


Mike McCarty wrote:
> On Sat, 30 Jun 2001, Larry Kerns wrote:
> > I believe the circuit is located at:
> >
> >     http://www.gorobotics.net/onelinekeypad.shtml
> Unfortunately, this site has broken links, including the schematic.

More information about the DPRG mailing list