Hi everybody, i can’t find the AN2131SC in my country, but AN2136SC seems to be reachable. I watched these chips in a datasheet and the pins 26 and 27 are differents in both, rest are identical.
My question is: There are some posibility to, in example, change some parameter in the source code to make the AN2136SC compatible with the MBHP_USB module? Thank you for your time.
hi again, a distributor has some chips possibly compatible with an2131:
uPSD3422E
uPSD3422EV
uPSD3433E
someone knows if these are really compatible? or someone knows if there are some other chip compatible?? Thanks for your time! ;D
I’ve no experiences with using other chips than AN2131SC (note that AN2131S is a different chip!)
Dangers are too high, that the firmware won’t run without debugging.
Therefore I strongly recomment to search for a commercial MIDI interface instead - in europe such interfaces are available for 20 EUR, so that it doesn’t really make sense anymore to build an own one
Best Regards, Thorsten.
However in my country make your interface is cheaper than buy a usb-midi interface 
. Thanks for all! 
.