| LED Matrix Display [aborted] |
| Wednesday, 30 January 2008 03:00 |
 Build on point raster with decade-counters and 10 pin interface for microcontroller connection. It actually worked. Don't have any picture or video of it in action, but I had text scrolling and some cool animations. I thought it could be a little brighter and rewired some things. After this it got a little brighter, but also got errors and I can't find their origin. I decided to try a complete new design with brightness in mind beforehand. Also more speed would be nice, so i may use RAM as buffer, not sure as for now. Short functional description: The 30x7 points got switched with BC547. The 7 lineswitchers got directly triggered by a controller. The 30 rows were parted in 3x10 and every part got controlled by a synchronized 10bit decade counter. The counters got clocked by the controller. A fourth decade counter triggered the 3 row blocks and got clocked by a '1 tick per 10bit' output of the other counters. I got enough frames per second to smoothly display scrolling text. Latest pictures:    
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| Last Updated on Wednesday, 30 January 2008 22:44 |
