Multi-IO Expander

[XORadmin]

Thanks for providing this project.

Loaded the project. No sound from the distingEx. Looking into it it basically does what I had tried myself (so not only a stupid user error ).

How would I do the loopback test?
Connect I2C A with I2C B is the easy part. Which settings on the NerdSEQ?

Kind regards,
Michael

Indeed, connect the 3 lines to each other.

Use only 1 pullup to 3.3V (doesn't matter which one...you can try also to swap to the other one on a 2nd test).

Load the project and play the pattern. Both LED should flash and in the mapping screen you see the 'loopback' reception in the first line 000 466 6AA B99.

If that works, try the other way around (set the I2C Port A to 16n->NS and port B to out. Change in the track setup to B-SC.CV)

I've tried that and neither do either LED flash, nor do I see any change in the first line in the mapping screen. I tried both A -> B and B -> A (with changed track setup). I verified that the 3 cables are correctly connected to their corresponding pins. Pull-up removed on B and 3.3V on A.

I then swapped the MIDI cable to see if that makes any difference - none visible.

What I also realized: How do I actually check that the NerdSEQ "sees" the Multi-I/O expander?
At one point I completely removed the MIDI cable between the two and AFAICT everything looked and behaved the same w/r to booting and looking into menus etc.

Kind regards,
Michael

Maybe a silly question... did you enable the Multi-IO at all?