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Davo

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Posts posted by Davo

  1. Low cost PCB fabrication

    in Fleamarket

    Posted

    Great, thanks for the explanation, I thought it would be something like that, but could not get me head around the complexity of even thinking about designing an 8 layered board. I don't think I'll ever need to go beyone a dual sided board.

    Another thing about layers -- The reason for four layers is almost always to have power and ground appear on their own layers.  Then wherever they're needed, a via is poked through.  This makes routing much easier with more complex boards.  Those two extra layers are entirely copper except where vias go through that aren't supposed to be connected to it.  Layers more than that are usually used to cut down on vias when things get even denser (like modern computer motherboards).

  5. in the wiki

    in MIDIbox Documentation Project

    Posted

    Either I can't find where these are, or the wiki is missing these features entirely.  I'm trying to figure out how to do a redirect.  With Wikipedia, you can make an article redirect to something else with a #REDIRECT[[target_article]] tag.  How do I do this with dokuwiki?

  7. MB-6582 Panels Order

    in Bulk Orders

    Posted

    yeah the LEDs stand quite high off the PCB (the gap is 10mm remember?) so you could mount them flat (not poking through at all). I personally like them to be as far out as the switches, so you can see a dome but it's not poking out further than the switches, which would look strange.

    I'll experiment with light pipes.

  8. Linux and midi ports

    in Miscellaneous

    Posted

    I assume you've installed the driver and Jack?

    Jack is installed.  I can't figure out what else is needed besides.  I have a MOTU Fastlane.  When it's plugged in, /dev/midi1 appears.  Doing "cat /dev/midi1" should produce a bursts of characters when keys on the midi board are struck, but nothing appears.  Mashing keys only results in the MOTU flashing a light: expected, but not what I'm ultimately after.  If I start Rosegarden, it recognizes that a MOTU Fastlane is connected.  It doesn't get anything from the board either.

  9. Linux and midi ports

    in Miscellaneous

    Posted

    Does anyone here use Linux?  I'm trying to figure out how to get a midi keyboard to talk to my Linux machine (specifically Ubuntu 7.04).  All the howtos on midi and linux either completely ignore hardware or skip past that, assuming it always works.

  10. MB-6582 Panels Order

    in Bulk Orders

    Posted

    I am ready to forget about alternatives and arrange a bulk order through FPE for engraved panels. If people want to go with lexan overlays or silk screen then that's fine by me, I will make all the files available to everyone. However, I think a lot of other people are happy with FPE's price and quality and the look of engraved artwork.

    FPE has been tried before and is known to work.  I'd rather have panels from there than something untried.

  15. MB-6582 Panels Order

    in Bulk Orders

    Posted

    There's someone in the UK who can take Front Panel Express files and turn out front panels for about a quarter to half of what FPE charges.  He mainly does synthesizer stuff and had a stock of Oakley panels.  Does anyone remember who this is?  I lost the URL and can't seem to track him down with Google.

  16. MB-6582 Panels Order

    in Bulk Orders

    Posted

    So if we go with silkscreen, I thought we might as well take advantage of it.

    Here's a proposal for alternate artwork:

    http://members.optusnet.com.au/~wilba6581/mb-6582/MB-6582_frontpanel_alternate.pdf

    Note the only major difference is the inverted labels for the control groups (i.e. black text on a white background). All lines and other text is identical to the original panel in FPD.

    I like it.  My only concern is over durability of the silk-screening.  The stock front panel of my Paia Fatman was so bad that I could chip paint simply by reaching for a knob and having my fingernail hit the panel.  Have you considered reverse-engraving on perspex/plexiglas?  Look at http://www.timefracture.org/D16pics/d16front2.jpg for an example of such a front panel.  See also http://www.timefracture.org/D16docs/D16_Design_Notes.html.

  20. filter mode button "30"

    in MIDIbox SID

    Posted

    Since I answered you the first time, you probably expect an answer from me again or you'll think I'm rude.  ;D

    Put the button anywhere you like. I've already said it's not needed. I don't understand why you really want one, considering you didn't know what it would do until yesterday.

    I have a great affinity for fiddling with a synth's controls while playing it.  Having a 3O toggle close at hand appeals to this. 8)

  23. filter mode button "30"

    in MIDIbox SID

    Posted

    I'm looking at Wilba's design and I noticed in his changes to the Step C panel that it's missing the "03" LED in the filter section.  Since I haven't yet finished my MBSID v1, I was wondering what this LED indicates and what is made more difficult with it missing.  Furthermore, why would this LED having its own button be desirable?

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