I'm trying to hookup a common anode 4-digit 7-segment LED array to my Arduino via a Max7221 IC.
Here's a hard-to-see (sorry!) pinout for my LED array (my LED array is the bottom common anode one, LFC0566XXX)
Here's the datasheet for the Max7221 IC that I'm using.
I was following a tutorial on the Arduino Wiki and it said that the Max7221 will not work with common anode LED arrays like the one I have. However, the comments on the Max7221 Sparkfun product page say that it is possible to use it:
You can drive common anode displays with this chip just fine. It has 8 cathode outputs and 8 anode outputs. The only thing you lose is the BCD-7 segment decoder, which would work strangely hooked up to a common anode 7 segment display. But if you’re just telling the chip which segments to light directly, it’ll work just fine either way.
How can I connect my LED array to the Max7221?