Midi on Kronos X88 - monophonic bass

[Krischu]

Hi,

I'm new to this forum and I hope I'm here in the right thread/theme.
Problem: I midified a 25-note Hammond B3 bass pedal using reed contacts and a midi controller that issues Midi-ON/Midi-Off signals to the Midi bus.

My friend for whom I built this has connected the Midi-Out of my device to the Korg Kronos X88 piano and chose a monophonic bass as a sound.

The purpose why he chose monophonic mode is that when giving each pedal key a short tip the sound starts like a string (double) bass and decays until another note is tapped.

This gives a clean legato sound without having bass notes sounding simultaneously which doesn't sound so nice.

So far so good. Everything works fine with my pedal but all of a sudden the Korg catches a note in its memory that appears whenever a key is released and it does not go away. Sometimes even, as it seems, when that same note is played another time and gets a OFF signal.

Midi-OFF corresponds to an open Reed contact, Midi-ON to a closed contact.

You may say: well, then there is that reed contact not just opening again.
I examined all contacts and all close and open again.

Meanwhile I'm wondering if this is a "bug" in the Kronos X88.
At present I'm trying to debug the pedal using Midi-OX on my notebook.

I'd be grateful if someone could help me on this.

--
Christoph

[OpAmp]

Hi,

Debugging it with Midi-ox is a good start to figure out whether it is the Kronos or the bass pedal.
I've no experience with reed contacts, but what about bouncing contacts, generating a stream of Midi messages where one "Note Off" gets lost due to a buffer overflow or something?

Good luck!