/diy/ - Do It Yourself

>>1283366

I think the guy is wondering why there are effectively *two* current limiting resistors for each of the four LED banks (In addition to the other unbalanced series limiting resistor)

If you're going to do that, you might as well get rid of the expensive PNPs altogether, no?

Furthermore, it appears that the banks are all powered at the same time. I've seen more complicated balancing setups (e.g. 7 segment displays) where, if only one segment was powered it was ultra-bright and if all then they were very dim. Looks terrible, eh? But this doesn't seem to be the case here.