Raspberry PI driving a FDS132 LED matrix display
The code and diagrams are released under the GPL license.
I removed the CPLD from the FDS132 display board, and connected some signals to the Raspberry Pi GPIO.
Also I added a little scan protection circuit.
Circuit diagram, the +5 for the scan detector comes from CPLD pad 22:
The removed CPLD pads with th connecting wires to a small board with header that goes to the Raspberry Pi GPIO:
The scan protection board, clears the screen (sets OE low) when no scanning signal is detected:
This is the software runing with the -d flag, it updates the date every second:
The C source for the Raspberry Pi, released under the GPL,
Compile instructions are given, and the GPIO connections are specified in the source file:
Current version has scroll up, scroll down, scroll left, and special effects snow and fireworks:
Somebody now also wrote a version that runs on Pi 2:
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Copyright Jan Panteltje 2013-always