Re: serial based button/lcd device
Luuk van Dijk <[email protected]> 14 Jul 2004 20:19:31 +0200
| Newsgroups | gmane.comp.hardware.openbrick.general |
|---|---|
| Organization | Mind over Matter B.V. |
| Message-ID | <1089829163.255.11.camel@wonder> |
On Fri, 2004-07-09 at 18:09, Ryan Grow wrote: > Hello, > > Does anybody know of a company that sells serial port > based input devices with a small number of buttons and > possibly a single line lcd display? no, but I know of a nice parallel port alternative: HD44780-compatible LCD's, available for about 10 euro for a 16x2 to 20 euro for a 20x4 display. at http://lcdproc.sourceforge.net you'll find a nice driver + server for them. The HD44780 compatbile ones allow you to connect a key matrix to the same parallel port as well (though lcdproc needs some work before that is fully usable in a client program; if you're willing to sponsor this, let me know). You'll have to do some soldering yourself though, (or find someone to do it for you) With some hacking and sawing they'd fit nicely onto an openbrick (-e/ng) I've just used an 16x2 char lcd in an embedded datalogger I made. I'll try to put a picture online soon. In normal mode it displays three screens with measurement info and status, and when the user plugs in a USB keychain 'disk' to copy out the data, it gives feedback on the progress. Luuk