UP - play
DOWN - editor
LEFT / RIGHT - scroll text faster/slower
UP - restart/return to editor
DOWN - pause
LEFT / RIGHT - faster/slower animation
UP / DOWN / RIGHT - move pixel
LEFT - set/reset pixel
start the animation by moving to pixel(0,0) (top left corner) and pressing UP
UP - restart/return to editor
DOWN - continue
LEFT - go to menu
check out the firmware hacking contest at https://hackaday.io/contest/10521-belgrade-badge-demoscene