Tetris Clock - Bicolor Matrix 32x32 is controlled by B.A.M method with Arduino Mega 2560, 74HC238 and 74HC595. This bicolor panel have 1/16 scan rate. This clock is referenced from HariFun. Please check at Youtube: https://www.youtube.com/watch?v=PSWw8geSzQQ
My instructables: https://www.instructables.com/id/HAVE-FUN-WITH-BICOLOR-MATRIX-32x32/