Baco Led Matrix
The shop Baco Army Goods sells (sold out pretty quickly) a surplus led matrix for cheap. Lets see if we can get this thing to work with its original interface.
The circuits online forum hosts a interesting topic where people are working together with reverse engineering this matrix and figuring out how it works.
Size 6 by 10 matrixes resulting in a resolution of 48 by 80 pixels.
CPLD provides multiplexing
Runs on a internal clock of 18.432MHz, the frequency is a typical baud rate crystal (Multiple of 1.8432 Mhz).
Optical input and output allows daisy chaining