The adapter seems to work fine. I can load 32k roms onto my Nanoloop One cart and it shows up as MIDI device in Logic, as you can see in the screenshot.

About the 64k: Here (https://www.nanoloop.com/one/index.html) the Nanoloop One page lists mGB as a compatible rom for the cart, but it "only" has two additional 32k rom slots. Does anybody know what that is about? I found a modified mGB on this forum which is 32k and I could load onto the cart and it seems to start up fine.

mGB compatibility is listed as a feature on the Nanoloop site, so I guess it should work somehow. https://www.nanoloop.com/midi/index.html

(BTW: The mGB you can get from Github is a 64k file. Shouldn't it be 32k?)

Hi!
Maybe somebody here knows the answer.
I have the above setup, but no sound comes out of the GB when I play a note in Logic. Be it from a USB controller or via the onscreen keyboard. Are there any settings I need to make in mGB or elsewhere?
Any help is appreciated.