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arumblack

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Posts posted by arumblack

  2. yamaha rm1x

    in Miscellaneous

    Posted

    Apparently i d need to change some of the buttons, any idea what there is under the caps?

    I would assume from the feel some sort of tact switch, but I never took mine apart so who knows. If it needs work I'd definitely try to get it dirt cheap.

    Oh yeah only two audio outputs on the thing if I recall and save files to floppy disk. I had fun with it but I never really liked the synth sounds only the drums were useable, didn't have hardly any other gear at the time so It lost it's thrill kinda quick. but it did have a cool sequencer and you should be able to get one for way less than the parts cost alone on a MBSEQ, let alone the labor. (MBSEQ is way cooler though)

  3. New MB6582 board, where is R80?

    in MIDIbox User Projects

    Posted

    I saw R80 on the opart list but try as I might I couldn't find it on the board. anyone with a quick It's next to the  "PIc 4", or "sid 3" or "power swicth"???? Or is it reall not there? It was late but I looked for a good 20 minutes......

    Thanks

    P.S. Smash TV comes through again...Great board, I'm glad I never finished my SID from years ago now... I bought all the SIDs long ago...

  4. yamaha rm1x

    in Miscellaneous

    Posted

    Sold mine for under$200, wish I hadn't. (Like every piece of gear I ever sold)

    Sequencer is good, internal sounds useable, not great. Get it for the sequencer, maybe even if you have an mbseq.....never too many groove boxes going at once eh?

    I wouldn't pay much more than $200 for it though.

  5. Wanted ALBS Waldorf Knob buy or spares

    in Bulk Orders

    Posted

    Schweeeeet!

    Personally not my fav knobs, but they are nice. and all the cheap knobs are trash looking.....and even some expensive knobs look terrible. Who ever would have thought that a thing so utilitarian as a knob would be so much trouble.

    So I will be ordering some of these when you get the bulk order up.

  6. BankStick Board Design

    in Design Concepts

    Posted

    I didn't see one last I looked, but it would be awesome if the Wiki had a section dedicated to board layouts and schematics (linked off the main page even) so people could potentially re-use other's work. I know that's a concern for some of the boards (such as CORE or Wilba's 6582 boards) due to someone trying to re-sell kits, but for smaller boards, I think it'd be awesome.

    Agreed, as long as there is some space for user comments such as " I built this one and it is great, thanks" or "I found this error, watch out" As it is, at least on the ucapps.de site you know it has been tested and built by many.

    Still a good Idea though, and possibly expand to include front panels and libraries for EAGLE/KiCAD

  10. KiCad Libraries

    in Miscellaneous

    Posted

    Looking for Libraries with Midibox parts. Anybody got some they want to share?

    I have tried to make some of my own, with some limited success, but it is time consuming.

    I actually found an Eagle to KiCad converter ULP (haven't tried it yet) on the cadsoft.de  website, maybe I should make them in eagle and convert? I really need the unlimited board size of KiCad, but am so much faster in EAGLE......

    KiCad is a slow learner for me some things are really wierd at first, like rotating a part after it has been set, I kept trying to pick up the part and rotate it, but all you need to do is hover the mouse over it and press R. Actually sensible, but very different than anything else I have used......

  12. help on rotary encoders

    in MIDIbox HUIs

    Posted

    You could perhaps write software to do something with such a hacked keyboard, but as mentioned above, you most likely would not be able to turn more than one knob at once, making such a project pointless and time consuming. Use MIOS and MIDIBOX instead, that's what it was designed for. Stick around , read ucapps.de. Start with the MB64E.

  14. Sputnik Booster (and the Future Posers)

    in Songs & Sounds

    Posted

    Nice!

    I particularly liked track 7,8,9,13,and 15. My wife says"That sounds like video game music" And I said, Uh, yeah.... and she said"Do we have to listen to video game music right now?" and so I put on Deutschland Muss Sterben and she was quiet......

    Care to post a list of synths/gear used on the album?

    Thanks,

    AB

  16. Computer case for midibox?

    in Parts Questions

    Posted

    Removeable hard drive drawers/trays are dirt cheap. You could fot a fairly minimal SID in one (may have to do something to accomodate the LCD) and solder everything to the centronics port which they use so that you could slide the whole thing out and slide it in to another "dock" if you wanted to use it stand alone.

                  G

    Hmm, finally something to do with those old SCSI disk tray's I've had lying around......Although, I really can't see a need to have a SID inside My massive tower anyway.........

    Definitely a cool thought though...If anyone is interested in some really nice HD Trays, let me know, I like to swap.  ;)

    AB

  18. Super simple -12v source for MBFM

    in MIDIbox FM

    Posted

    The reason I say it might not work with a full control surface and a single 12v supply is the negative voltage decreases (gets closer to 0v) as you add load.

    Well, all the other CS stuff and LCD, etc... are powered from the 5V supply, so there should be no more load on the -12V line in a box with all the bells and whistles.

    That still leaves potential switching noise and Imbalance problems of course.

    AB

  20. Dual SSM2044 PCB Bulk Order

    in Bulk Orders

    Posted

    Thanks Madox. I was just trying to give a proof of concept using whatever I had lying around, didn't bother with the math. When I have a board in hand then I can give better instructions, or maybe sinesurfer can figure it out himself with the info given.

    Sorry if this has hijacked the thread....

    AB

  21. Dual SSM2044 PCB Bulk Order

    in Bulk Orders

    Posted

    Sine surfer:

    I went home and tried this (see attachment), and it gave me a bipolar voltage at the wiper of the pot.Now the extra resistors were to scale the voltage to fit the pot I had and it didn't go to quite +/- 100mV, igot around +/_350mv with a 100K pot and 2.2M resistors, using a +/- 15V supply. anyway, if you do some experimentation you should be able to get the voltage needed. I would add some trimpots too because the voltage wasn't "centered" Right due to the tolerance of the components. Oh, and a linear taper pot is what you would want. The load resistor would be your SSM filter CV input.

    Now I'm not the most experienced guy here, so does anyone see something wrong with this method?

    3159_SSM2044BipolarCV_pngdfcedd4f2f935ea

  22. Dual SSM2044 PCB Bulk Order

    in Bulk Orders

    Posted

    of course I did not design this board so I can't say for sure. I did just notice on the Wiki page (link at the first post of this thread) that the "CV" is not a standard V/Octave, and an additional circuit is required for this to work properly.

    The control summer found in all the documented designs on the web was removed. The frequency input of the 2044 expects an input of about -100..+100mV. The mentioned cirquit adapts that onto the standard V/Oct CV range. But this also means you would first need to adjust offset and gain of this cirquit to make the SSM input conform to that standard and then calibrate the output of your AOUT module to also comply with this standard. V/Oct is certainly important in a completely analog modular synth where several analog control sources are mixed and fed to that input, but in a situation where the AOUT is the only source, this conformity is not good for anything. So removing this stage of complexity reduces size and cost and takes away another level of necessary calibration.

    The consequence of this is: If you want to use this module together with “non-AOUT†CV sources, you will need to add the control summer cirquit externally (I’ll publish a schematic for it soon). And, if you’re using the module together with the classic AOUT module, you will need to add the bipolar option (as documented on the AOUT page) at least for both frequency channels (normally AOUT1 and AOUT3).

    So to use external CV you would need this extra circuit. to just have some pots you would need to give an input of -100mV to +100mV for the frequency CV. some additional circuitry will probably be needed here as well, but it should be doable.

    Seppoman, can you comment on this?

    Edit: Fixed quote.

  23. Dual SSM2044 PCB Bulk Order

    in Bulk Orders

    Posted

    You would have to have CV, but it may not be an external CV. You would need some pots for cutoff and resonance, maybe some resistors to scale the voltage.

    With CV and MIDI control I suggest a core running mmidibox cv and an aout of your choice.

    Correct me if I'm wrong...

  25. The Dub Master MIDIbox 64 -work in progress-

    in MIDIbox HUIs

    Posted

    I have to chime in on this too, I've been watching the progress of the dubmaster and I say you have done a great job so far. You even have the girlfriend who helps that we all wish we had....(I am however grateful for the wife I have who Tolerates my hours of work on various electronic music related projects, and hey, I did get her to bend some leads for me once :))

    I had a three year absence from midibox, with a still half finished SID, and now I've started the SEQ. You owe it to yourself to finish the box, it really is beautiful. Take a break if need be, but come back to it.

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