And you you want this on a display that's easy to read across the room and can be chained to several display for showing multiple values without scrolling or changing?
Then U-Disp is something for you.
U-DIsp is a eight character seven-segment display that you connect to your computer by USB. The display is controlled by a Windows Service (background) that are pulling information from a multitude of sources and can be configured to display in on one or several displays.
This video shows two chained displays being plugged into my laptop and starting up showing their built in "attract mode" for a while.
When I start the software on the laptop the attract mode ends and the upper display then displays the number of Diggs of two stories on Digg.com, and the lower display shows the current time, my number of unread mails and the CPU load.
Step 1: Open Source Software & Hardware
Both the firmware in the microcontroller on the board itself as well as the software running as a service on the PC are open source and can by freely modified and redistributed.
The hardware is also open with the schematics and the board layout in Eagleformat plus complete Gerber files.
You are free to build, modify, improve, use, sell and distribute all of this as long as the original copyrights are left intact in the code.
Since I've only got the Non-Profit -version of Eagle I'm not allowed to make any money of any projects created with the software, but I'm allowed to sell boards at my cost-price with no markup. So I can sell some of my spare empty PCB's to anyone that's interested.
Here's the BSD license,
Copyright (c) 2007, Mats Engstrom
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- The names of its contributors may not be used to endorse or promote products derived from this software without specific prior written permission.