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MB64seq LED question


der.warst

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Hya,

Now that i've read the recent developpements on the MB64Seq, one question came to my mind. When Thosten stated the Interface features to be static i got a little afraid my interface design won't work the way i want it to work because i used 4 extra LEDs on the "Mute Track"- Buttons to indicate if a Track is on or off. Is it still possible to implement that function or do i have to wait for a PIC18f...- Firmware? Any help appreciated.

Thanks,

Simolch der Warst

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I am really not sure about how the LEDs are set up compared to the new chip, but I believe it will be possible. It should be just a matter of latching the Digital output for every momentary push. I hardly believe that the MBHP is unable to do so, but if so it should be fairly easy to make a latch circuit to do what you want.

No Fears, DIY is always a possibility.

-Sephult ;)

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Hi Simolch,

you are right, it makes sense to add 4 LEDs for the track mute function.

The firmware already drives 32 LEDs (-> 4 shift registers), but only the first 16 are currently used. It wouldn't be a problem for me to add even more functions to the spare DOUTs - any suggestions before I change the firmware?

Best Regards, Thorsten.

P.S.: 32 LEDs are maximum, the PIC16F based sequencer will not support 64 LEDs due to memory limitations.

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Now that I'm thinking of the current track indicators LEDs...

Currently there are some digi INs with more or less the same function

DIN/J3/D4  (Start /stop)

DIN/J9/D5 (restart)

DIN/J9/D7 (stop)

http://www.ucapps.de/mbhp/mbhp_dinx4_mb64seq.pdf

perhaps one of those on J9 could be used together with these LEDs to form a 'track select' function of some kind.

If I'm not mistaken, currently a track is selected by tweaking a knob or digging into the menu.

Layer select buttons are already present.

But with a dedicated track select button, you could use the 'soft takeover' button to display the track contents without having to turn (& alter) a knob.

BTW I do like the start/stop combined in one button like the J3/D4.

-just an idea-

just thought about it again... maybe...

shift+trackmute= track select ?

Best wishes

DriftZ

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Hi DriftZ,

the possibility to select the track directly is a very good idea! I would prefer a toggle function (1->2->3->4->1) which works faster in this case :)

It should replace the stop function.

Best Regards, Thorsten.

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V101 can now be found in the MIDIbox64seq download section.

(I've implemented a shift button for the mute function like suggested by DriftZ, because the handling is more ergonomic :-))

New wiring diagrams:

http://www.ucapps.de/mbhp/mbhp_doutx4_mb64seq.pdf

http://www.ucapps.de/mbhp/mbhp_dinx4_mb64seq.pdf

Have fun! :)

Best Regards, Thorsten.

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Hi DriftZ,

did you also do something with the 'autosave' thing

no --- out of memory --- it was already very hard to include these minor features into the firmware, I had to optimize old routines again and again to get just 4 or 5 free bytes for a new button function. Sometimes this makes fun, mostly not ;-)

Please check if the new release is already working without crashes.

Best Regards, Thorsten.

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Burned v101 to my 1st box, Seems to work just fine here, the "4step note-overview" is nice too.  Also noticed you have swapped the shift(shortcut) button, good thing I haven't soldered my 2nd box's buttons yet :) ; direct track-select & shift-tracksel=mute is the other way round then I was thinking of tho :) (I would have kept the direct mute & chosen for shift-select way, but its a matter of personal taste I suppose)

But again, great work TK !!

did you also do something with the 'autosave' thing  

no --- out of memory --

Not a big prob, the switch solution should work just fine  :)

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