I am building a large 8x8 matrix of pvc pipe sections (circles) with 2 leds inside each circle. Each led has + and -.
Eventually I want it to play games like only on a bigger scale.
I am hoping to get 3 colors (green,red and both(yellow)) and am
wondering if I should wire the cathodes in common and daisy chain the 7219 or if I should just wire them (and the 2 7219s) totally separately and use more arduino pins.
If I do the latter, will I have to worry about multiplexing “in sync” betwwen the two colors, or will my eyes just see yellow when both leds in a circle are on?
eg: supposing I have the entire matrix green, and also light 2 red leds. Will the 2 leds get updated more often than the greens and therefore end up looking more red in that pvc, or will everything work out and those 2 spots will be yellow?