Hi everyone, I just bought a set of 8 by 8 LED matrix from Active Surplus http://www.activesurplus.com It a board containing 8 - 8-by-8 LED matrix for $10 ca. After de-soldering the parts, end test and investigate the LED matrix ( for pins, voltages, current, rows , colums ) I discover that if you want to display red but not green, display green not red. ( red and green can not be at the same time ) :~
My question is how can I do to display red or green using logic gates or multiplexer or de-multiplexer ?
Here a basic diagram of one cell.