Steven_C

Hey Doc, Â interesting idea. But I have too much work to do before I will be buying any more parts! So how much did you pay for the MF's? ...Steve edit... I found a nice encoder jog wheel in a discarded sony VCR!

The 6N138 optocoupler has been chosen after others, as it is the most suitable for these projects. (at least that's what I think) The CNY-172 (or was it the 3?) was used in early midibox designs, but did not interface well with some midi connections. To get info on the part you have, try searching for a data sheet on the Farnell electronics website. (www.farnell.com if I remember correctly) (Try only the first line that appears on the Optocoupler) Then figure out the pinout compared to the 6N138. If it all seems too hard, then you can send me 10euro, $10 US or $15Australian (cash) and I will send you 2x6N138's. But you would be better off finding a supplier that you can order replacements from if you need them. (and I have a reputation for being slow to put things in the post! :-[) where are you located? there are lots of suppliers mentioned on the 'where to order' page, on-line ordering is possible, and if you don't want to put your Credit card number on-line, then a lot of them let you telephone the number through. (It's a pain for those of us without CC though!)

Thanks for the reply, Thorsten! ;) handy for a controller keyboard, I guess!

Its the bit at the end I don't understand... does this mean it is possible to create a serial midi interface to use with any generic midi device? or does it mean that only a midi serial input (output not possible?) can be created by combining the midi-merger project, and the MAX232? thanks, from Steve

Amazing! :o How you find the time, TK I don't know! But thanks for inspiring us with your awesome electronics, that is really a peice of art! ...Steve

Strange but cool! ;D slightly annoying, but at least it works! Reminds me of my Apple Mac G3, Since I put a third party CDRW in, it won't boot until I open and close the CDRW drawer! then OS9 will boot!

I couldn't find them on the site. But those flouresent displays are easy to read in the dark! here's a link to a very cheap 128x64 graphic display from Rockby http://www.rockby.com.au/new_lines_02.pdf

Dan, From another thread... From this thread... So now it does work ok? (sounds like it, but I'm just checking) I've run out of midi ports, and if I could put my MB LC on the com port that would save me one midiport! My second LC will go on a normal midiport. thanks, from Steve

8) paddle! 8) (Now we are moving somewhere! nice call Dan!)

My LC has been doing the same, but mine is on Mios 1.5. It works fine on my other computer though, so maybe some setting has been disrupted in logic. I will do a re-install of logic, I think. Meanwhile I have to tidy my room, to even get to see the LC, and my computer! (had to move furniture around, and now I can't find anything, so I'm on my Bro's PC right now!) So Dan, this means you got 3 LC's working off one Midibox to Com? (even though you had to fiddle a bit?)

architecture

I thought those were crap, until I realised that they have inbuilt display! Would be quieter than having motorfaders. I wonder if they last longer? Just think... No jitter problems ever! (Now that Thorsten has stopped this problem anyway!)

I wish I knew too!

He He! ;D Glad someone else is excited! In the last 2 weeks, I have found more info on this topic than the first few months of searching! After looking at the specs of the vestax vinyl cutter, I thought that it couldn't be too hard to match that performance! (only 12kHz freq response! :o) But then I saw how much a 'real' cutting lathe and electronics was! aaarrrgggghhh! And then I looked at how expensive it was to have dubplates made, so I thought I would at least have a go at diy. Just be warned... I don't know whether it will work yet. And cutting stylus are very expensive, around 120euro for a re-conditioned one. And quite a lot of machining (or sneaky fitters tricks!) will be required. And, a hi-torque direct drive turntable. (like modified technics 1200) and even then you have little hope of approaching the quality of a real disc mastering lathe! look at www.vinylrecorder.com for a pre-built alternative - but only if you have $$$ thousands to spare! If you know someone who has the real deal (neumann or scully disc mastering lathe) and will cut dubplates for a reasonable price, then that route would be better! (no-one near me does that!) The electronics may be expensive and complicated too. see ya, from Steve BTW, have any of you looked at the thread yet?

Presently at conceptual stage. Check it out at http://www.diyaudio.com/forums/showthread.php?s=&threadid=24809&pagenumber=1 I dunno if it will ever work, but I'm going to have a go at it. If anyone else is interested, let me know, and I can share info.

I thought about building a section like this, for controlling plugins, eq, etc, but the way I thought of doing it was to build about 2-4 LC's, with only encoders, lcd's, and some buttons. But in the end it would be tooooo much work, expensive, and many more midi ports needed! So I am going to build a 16 channel LC instead. Just trying to get some parts for it. I don't know any more, sorry.

Thanks, Kent.

Dan, thanks for that reply! and thank-you for saving me from spending time trying to get that to work! So you have 16 channels and one master fader? (re: 3 cores) ...Steve I wonder if you could create a midi to com interface, by connecting the Max232 to the midimerger project?

yes, strangely is an english word! ;)

I never had luck with the midi merger inbuilt on my old MB64, things always crashed. Can't really remember the details now. (posted them maybe 18 months ago!) I guess people could build a dedicated merger in the meantime. Simplest ucapps project, use up your old PIC16F874 or '877's! Build easily on veroboard! (BTW, how do you get it to work on '877? I can only find the firmware for '874.

there is a very busy forum for analogue audio... diyaudio.com

These days, it is not so cool to build your own mixer. (too expensive, when there are such cheap commercial units) Unless you need a custom device that can't be bought. I spent Aus$700 in the mid 90's bulding an 8 channel live sound mixer, (School project) but ran out of money at 4 channels! Now it sits in a cupboard! If you have trouble finding circuits, and PCB layouts, I can help you out there, but the design is very old, (maybe 20 years) and with very simple features, only 2 FX sends, 3 band EQ, and not much else. No inserts or anything! But you really start to learn how analogue audio works, especially signal flow in a mixer! I think it would be very cool to build an automated (volume level only) mixer, using Thorstens AOUT modules, and VCA's though! Or even using the MF module, with Motorfaders that have an extra track for audio signal, but these are very expensive!

Now I understand why you were asking those questions! It makes it hard, not knowing someone who has tried it with cubase, I see.

thanks for that 'Hint', Thorsten ;) I thought that may be the case.

have a look at the MB gallery, at the close up pics of the PCB mount buttons, and the mounting method. (thickness of 2x M3 nuts, as spacers)