Hello everyone in the Zynthian world. First of all, I wish you a wonderful new year!! I have a problem and I don’t know how to solve it. I use a midi accordion with Zynthian, with a bellows sensor on the CC11. It has no sensitivity and no volume I have to act extremely hard on the bellows to raise the expression to 20 out of 127. If I use the accordion with another expander, the expression works great. Is there any solution to make it work the same on Zynthian? Thank you
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I would divide the problem into at least two areas:
For specific advice, additional information is missing. As a wind controller user, I can empathize with your situation and have an idea for solving the problem with breath CC2 and expression CC11.
Hello! What midi plugin are you referring to? I don’t have settings for the expression sensor on the accordion, and there would be no need either, because wow works on another sampler expander, and likewise in Midi-Ox the values are normal…
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So first, verify what CC11 values are going into the Zynthian. Connect the accordion to the Zynthian and, in the webconf, go to Interface and MIDIlog. Observe what signals are flowing into the Zynthian; you may need to select a specific source.
https://wiki.zynthian.org/index.php/Web_Configuration_User_Guide#MIDI_Log
Let me know which synth you want to work with, and I’ll check the options regarding CC11. Zynthian handles CC signals a bit differently than usual. It’s necessary to configure which CCs should pass through to the synth engine. Since I’m not at the Zynthian right now, I’ll let you know in the evening which MIDI plugins can be used to modify CCs—I don’t remember them off the top of my head.
I think that @Tubi has said the CC range is 0…20 and the CC number is 11 so may need a CC scale MIDI plugin that multiplies the CC value by x6.
Yes, that’s right… It hardly goes up to 20. And CC11 is the channel used on any expander for expression
The name of Midi tool is MIDI Scale CC Value.
Do I understand correctly that when connecting the accordion to the Zynthian, the accordion sends a maximum value of 20 on CC11? And when you connect the accordion to another synthesizer, it sends up to the maximum of 127 on CC11?
Note: When I was experimenting with it, I discovered the following. I created a MIDI Chain with MIDI Scale CC Value and MIDI Control External (from @jofemodo) in series. However, the CC was not processed by the first MIDI Scale CC Value, and the same value that entered the Zynthian came out of it.
Yes. With another cc11 synthesizer, 0-127 works normally
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And it sounds as if interrupted… with noise. I have a 48000 sound card and 256 latency
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I still believe the issue lies with the engine you’re using.
What you are describing seems quite unlikely. What type of MIDI output does the accordion have? I mean, is it through DIN MIDI or USB MIDI?
I tested a setup where I had a wind controller with CC2 on the input, converted it to channel 11 via MIDI CC Map, multiplied it by 2.0 using MIDI Scale CC Value on channel 11, and then sent it to Sfizz with the input for CC11 enabled. Which engine are you using?
032-sfizz CC2-_11x2.zss (6.6 KB)
I modified this midi controller for a friend, so he can use it with his left hand. The sounds are created by me in Cubase
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I have midi serial with optocupler 6n138
If I deciphered this correctly, it’s about FluidSynth. Go to the Chain Options and enable MIDI CC by allowing CC11. See the images for reference.
Thank you. I will try and let you know if anything changes!
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This is confusing me!!! 
How and why is the keyboard reversed with higher notes to the left and lower ones to the right? I guess this is a left handed keyboard which is rare but a real thing!
It’s normal for akordeon
I am sure my piano accordion had “normal” keyboard behaviour when I played as a child, i.e. increasing pitch as I played to the right/lower part of the keyboard. I am right handed so maybe that is relevant.
Yes…it’s a left-handed keyboard. I modified it for a disabled friend 
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