Brads Electronic Projects Forum

Thanks to both of you for the hints, I'll read and study carefully your links bitfogav. brad, I'm fond of retro gaming, I like 2D, pixels and immediate fun. I think I'm starting to have a nice collection with nearly all console systems. Recently I had good luck with an eBay auction, two Nomad (one w...

Thanks a lot, I think I have understood the theory. I'm gonna do some reading about the subject :)

I'm about to buy some Motorola MC74F374N, they seem to do the same as 373.

Oh yes of course, I don't have to only think about time to scan all the matrix but also about the time each LED have to stay on to be visible enough. Or maybe, with a 16f628a at 20 MHz, I will have enough time to execute the code and to draw the same image several times to make it persistent enough....

Yes, I forgot about this way to combine colors, thanks. I was too focused on PWM because it can create a nice and subtle effect. But, can we create (good working) PWM from this microcontroller or do you know an easiest way to do it ? I would like to adapt it to my SEGA MegaDrive and to my SEGA Nomad...

First of all if "Rainbow mod" is not another name for "Mode Select Hack" then sorry for posting in the wrong section. I really like your SNES mod : http://www.bradsprojects.com/electronics/Bradsprojects-SNESModeSelectHack.html Do you think it could be improved by adding region selection with control...

My idea was to draw less current by controlling only one LED at time and to be able to use both colors of the LED Matrix with only one 16f628a.
Maybe can we use NOT gates to get logic 1 instead of logic 0 at anode pins ?

Hi,

Will it be a good idea to use 3 7442 ? One for grounds, one for greens and one for reds.