Hi…
I’ve got this schem done for the beats/smpte display on the LC/MC using 2 MAX7219’s (as suggested on a thread from before as i remember)…
Is it okay? If all is good I can test as soon as 
Best
D
I already wrote this in a PM, but it could be interesting for everybody:
The 7219 gives you no advantage compared to the already existing solution (http://www.ucapps.de/mios/leddigits_16.pdf) which will be integrated into the MIDIbox LC sooner or later.
The 7219 is something like a serial 16 bit register with command interface. Two of them allocate 32 bits in a serial chain, and this is exactly the same number which is allocated by the leddigits_16 module.
But the driver for a 7219 is totally different - and thats an disadvantage.
So, the use of a 7219 makes only sense if enough pins are free to drive this serial chain seperately. And this isn’t the case for MIDIbox LC (assumed that a KS0108 display is connected).
Btw.: the driver is similar to that used by mbhp_aout
Best Regards, Thorsten.