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SEQ4 built...a few problems


kogz23
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Hi there,

happy new year to all!

Finished building my seq4 and am having a couple(so far!) of problems that I can't seem to sort out.

Firstly I can't get any midi out. I am using the standard MBSEQ_HW.V4 file. Midi seems to be working fine when interacting with the MIOS studio, in and out is checked and all seems good. I'm justing putting a few notes into a sequence, playing it and I am getting no midi notes coming out. All that is read is the start stop info.

Secondly, a really baffling one for me, the 2nd GP button works intermittently. Sometimes GP button 1 controls it, then GP 2 becomes inactive. I've checked the switch, changed the relevant IC on the DIN board and checked for errors. Can't find anything wrong...

Anyway, any help much appreciated!

Cheers

Al

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Hi kogz,

am a newbie in this field, too, but I think you can change the default port from USB to OUT1 in the MIDI Configuration.

Regarding the GP button - it is most likely a bad solder point - trace again with a beeper - if you built the control surface on veroboard instead of a PCB, rewire the button.

Greets,

Peter

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Firstly I can't get any midi out. I am using the standard MBSEQ_HW.V4 file. Midi seems to be working fine when interacting with the MIOS studio, in and out is checked and all seems good. I'm justing putting a few notes into a sequence, playing it and I am getting no midi notes coming out. All that is read is the start stop info.

My guess would be that you forgot to assign a channel to the track you're playing or the likes. Since I have no idea about the mbSEQ I'd suggest you give the manual a shot ;)

Secondly, a really baffling one for me, the 2nd GP button works intermittently. Sometimes GP button 1 controls it, then GP 2 becomes inactive. I've checked the switch, changed the relevant IC on the DIN board and checked for errors. Can't find anything wrong...

That sounds like a solder bridge or a broken cable. So your best shot is to recheck the wiring and soldering of those two buttons - a multimeter in continuity mode may be very helpful :)

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