A persistence of vision (POV) display with five 0805 LEDs piggy back on an ATTiny13.
Documentation on Hackaday.io. In action: YouTube.
The displayed pattern is hardcoded into the program. You can either manually edit the bitpattern in pov.c (const uint8_t data[] ...) or include a generated C file.
See banner1.txt for a template for the generated C file. "X" is LED on, " " off. The awk script will generate a C include from it
./banner_txt2c.awk < banner1.txt > banner1.inc
or just
make banner1.inc
make flash