I just finished prototyping a 10x10 3mm LED matrix that has
a mounting area for my PICO1TR. The matrix charlie-plexes
eleven I/O lines to drive the LEDs.
The pictures of the board and a demo video are at
http://wiblocks.luciani.org/PICO/PICO1TR-LED-S-index.html
The C library and the demo sketch are at
http://wiblocks.luciani.org/docs/app-notes/pico-led.html
For this demo I wrote a Perl script that will convert
an ASCII representation of the LED matrix into a C data structure.
I use this utility to quickly create the characters shown in the
demo. Using a text editor I created ASCII pictures of the characters
using asterisks and spaces. The script then outputs the .c and .h
file containing the data.
(* jcl *)
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