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Screaming_Rabbit

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  2. Add automation to an existing mixer

    in MIDIbox HUIs

    Posted

    - I haven't started looking at the software side of this project, but I'm a little scared of that... My programming skills are next to zero... Do I need a lot of tinkering around in the source code or is this some kind of easy/"use mostly default settings" project?

    ... no programming needed at all. Just use the MIDIBox LC and assign "virtual" mixer tracks in your DAW (... as you stated above)

    - do I NEED the lcd? Probably if the answer to the above question is 'yes, you need to program something the size of Windows7 and you'll be debuggin 20h/day for 3 months' :p

    ... no LCD needed. If you run into trouble during building the modules, you still can buy one cheap from Ebay for debugging purposes.

    - reading up on PSU's now. I'm guessing it will be a better idea to get a separate psu for the motorfader system instead of tapping into the mixing desks' power??

    ... yes, keep the MFs supply away from the analog mixer's one

    - the 47k resistors for the touch sensitive side... excuse my newbieness but what kind of resistors should I get? metal, carbon, watts?? (at least I know there are different kinds of resistors ;-)

    ... regular carbon will do (I don't even know the "size", but don't worry bout the power...)

    - 32 faders will use 4 MCU emu's in my software (currently Cubase, but I'd like this to be as open/futureproof as possible) - probably a question better asked in a different forum, but I'm guessing there is no real limit on how much MCU's you can use in most DAWs? (in case I would like to add another controller at some time - as I already have a real MCU + extension now)

    ... AFAIK all DAWs can handle at least 4. But there is a limit on some - Sequoia and Samplitude only can handle 4 at the time.

    - dimensions: my mixers' case luckily has some extra room underneath the channel modules, but the two big caps on the core and mf modules might be a tad too big. I'm guessing there is no harm in mounting them sideways? (as long as I protect other components and stay clear of those that generate heat)

    ... no, no prob. There are even caps to mount horizontally. You have to check by yourself what fits best (it's only a matter of where the contacts are placed)

    - grounding and interference... the big Q that will make or break this project I think...

    The alps has 9 connection points: A & B are for the motor (-> MF module), 1,2 & 3 are for the log fader (audio -> these go to the mixers' pcb), 1', 2' & 3' are for the lin fader (data -> core module) and a touch point (-> DIn module).

    Would I need to connect the motor faders' chassis to the core module (as shown in the _mf_interconnections.pdf, light grey line) or will I be looking for trouble here (interference, grounding vs the console)??

    ... I think I wouldn't connect it, since the cover is grounded by the chassis (frontplate)

    Would I benefit from making some kind of box/shielding for the modules when I put them inside the console?

    ... hmmm... don't know - I'm no analog audio circuit freak :-)

    ....or am I completely delusional and shoul I be talked out of this project? I've searched this site, prodigy-pro, gearslutz.com and it seems no one has tried this thing before and people suggest it won't work because of interference. The documentation of the MF module mentions noise, especially when doing heavy automation..

    No, no talking out of it. About the noise...? Just try it with one fader, as you stated and don't worry about gearslutz and prodigy - So much bullsh... spread there (...though not all).

    Greets, Roger

  4. Mackie HUI Schematics

    in Miscellaneous

    Posted

    The transformer is deader than dead !

    Nothing to measure. The only thing i found is the Core size which is 0.875" x 1.25". Any idea?

    Thanks for your help.

    ... you did not answer this question:

    The Fuse (-es ) are OK ?

    Can you measure the primary side of the transformer at the solder joints?

    Greets, Roger

    PS: Since this post goes into the direction of servicing a non-MidiBox, I'll move it to "Misc"

  6. Alternative front-panel from aluminum dibond

    in Parts Questions

    Posted

    If you're using this Alu-Dibond material (I also thought about using it once), you need a solution to make sure, that both metal sheets get properly grounded.

    If you're using M4 counter sunk screws with a 2mm dibond sheet, this should actually be granted, since the counter sinking will go all the way down to the lower aluminum sheet.

    But if you use e.g. M3 counter sunk screws with a 3mm sheet (usually the straight whole would be 3.2 mm then), the screw gets centred from the counter sinking and it is possible that the lower aluminum sheet does not touch the screws and therefore the lower sheet would be ungrounded. In this case you'd have to scratch away parts of the protection foil from the lower aluminum sheet to make some additional contact to e.g. the metal case or jam in a grounding cable if you use a plastic case.

    Greets, Roger

  7. Recording Console

    in MIDIbox HUIs

    Posted

    You probably would best go with dual linear taper motor faders. One Taper with 10k lin for the midibox and the second taper depending to what the faders currently (VCA-Controller Fader) have - Probably also 10k lin.

    I think these faders won't be available as standard.

    Another solution (if the console also uses 10k lin) would be a mode-switch for each fader... maybe with reed-relais. Then you would implement a master mode switch in your Midibox (DIN) and control the reed relais over a DOUT. This way you could switch your console back to VCA functionality and back with one button press.

    Another possibility again would be to control the faders with MidiBox and send the fader position over AOUT back to the VCAs (might be a bit expensive fro 64 Ch).

    Your console probably also has touch functionality. If yes, then it gets a bit trickier. What you could do, is checking if you can pick up a "touch activated" signal from somewhere in the existing circuitry to send to e.g. a DIN board.

    ... and yes, LC is probaly the best basis to work from.

    Greets, Roger

  11. SammichSID, Zoll Abfertigung

    in Deutsch

    Posted

    Meine (völlig legitime) Herangehensweise: Ist ein Geschenk (deshalb steht's ja so auch drauf), da gibt's selbstverständlich keine Rechnung zu. Also kann ich auch keine vorbeibringen. 100AUD steht drauf, weil das so ist. Kann ich jetzt bitte mein Geschenk haben, ich will nämlich löten. Danke.

    :whistle: ... genau meine Herangehensweise.

    Bei gewissen Fragen, welche ich eben gelesen habe, musste ich mich fragen: "Hmmm... bin ich mit meiner <Geht Sie einen Dreck an...> Einstellung ein Schwerverbrecher oder wirklich nur ein hobby mässiger Steuerhinterzieher, welcher vielleicht mal auf die Frässe fallen könnte und den's aber nicht wirklich beängstigt?" Falls es Dich mal erwischt und Du einen Strafzoll obendrauf kriegst, klaust Du dem Beamten den schönen vergoldeten Kugelschreiber, welchen er Dir zum Unterschreiben des Nötigungspapiers hinstreckt, dann geht es Dir beim Rausgehen fast so gut, als hättest Du keine Strafe gekriegt :tongue: - Würde mir wirklich nicht zu viele Gedanken machen :smile:

    Grüsse, Roger

  17. Blutige Anfängerfrage: Lötreihenfolge

    in Deutsch

    Posted

    In der Lötanleitung stand noch, man sollte die Kondensatoren möglichst nah an die anderen Bauteile löten. Gehts da jetzt um Millimeter? Ich dachte immer, solang mans nicht übertreibt, wären die Wegstrecken in ner Schaltung ziemlich gleichgültig...

    Ich weiss nicht genau, von welcher Anleitung Du sprichst aber ich nimm an, dass es sich dabei um die Block-Kondensatoren vor den ICs handelt.

    Diese sollten so nahe am Pin sein wie möglich, so dass möglichst wenig "Leitungs-Weg" übrig bleibt bis zum IC, auf welchem die Speisespannung durch äusser Einflüsse noch beinträchtigt werden könnte.

    Grüsse, Roger

  20. Confused Re 2xLC

    in MIDIbox HUIs

    Posted

    That means 6 cables, 2xIN and 2xOUT.

    ... what now? :rolleyes:

    The answer you see in my previous post above:

    "Regarding the connection of the units, it depends on your host soft. In Sequoia I would connect the master-unit as an independent unit on its own midi port. If you want to connect it together with an 8-fader unit onto one port and handle it as the "master"-controller, you probably have to make use of MidiBox-Link."

    Greets, Roger

  21. Confused Re 2xLC

    in MIDIbox HUIs

    Posted

    Hi Lu Taska

    Yes, for your Master Fader, you need an additional core - Do you really need a Master? - Think about it.

    Regarding the MF-Boards I would suggest, that you take 2 and the single Master Fader you build just partially on a stripboard.

    Regarding the DIN/DOUT boards you see it correct but I don't feel for counting it through.

    Regarding the connection of the units, it depends on your host soft. In Sequoia I would connect the master-unit as an independent unit on its own midi port. If you want to connect it together with an 8-fader unit onto one port and handle it as the "master"-controller, you probably have to make use of MidiBox-Link.

    About how many LTCs - Go for one GM5

    Greets, Roger

  22. knobs and encoders

    in Parts Questions

    Posted

    i´ll try to get the right terms...

    No issue... I think you're German, so you have the same problem as me... I also don not always hit the correct term :-)

    ... and yes, I's worth the time... but be aware of the potential of addiction :shocked:

    Greets, Roger

  23. knobs and encoders

    in Parts Questions

    Posted

    Basically I would say, yes you can use the encoders. Though I don't know what "2fach Rechteck" is exactly.

    About the LED ring, you need to know the matrix constellation.

    Best for Encoder and Ring: Get the datasheet from the vendor.

    Switches (these are not knobs):

    Yes, they should work for you.

    Greets, Roger

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