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Davo

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Posts posted by Davo

  1. Yellowing is strange... not even my original prototype PCBs have that, and they're much older.

    The pads on the first run of PCBs might be a little tarnished (they aren't gold like the second run from SmashTV) but they should be OK. If you're concerned, use a bit of extra flux before soldering.

    Whoops! I forgot to say that it's the aluminum front panel that has yellowing silkscreen. It doesn't bother me too much except that it no longer looks good with the knobs I have, which are stark white Waldorfs that are still stark white.

  2. I`m not sure why every knob manufacturer don`t offer all their knobs in version without pointer. AFAIK from known manufacturers only Re`an do it, but still, it is very difficult to get all their knobs variations in small quantity.

    I personally like their P670 model very much. It has so many advantages... it is soft touch, small diameter, small height, It has skirt that covers the nut,  comes in variety of colors and it is cheap! :) Meny DIY people and commercial manufacturers use it for their units. But, they don`t offer a version without pointer. :(

    TM6Large1.jpg

    Recently I find on Farnell knob that seams exact clone of this Re`an knob, It is made by Multicomp and it has pointer-less version. :) But... there is always "but" datasheet says it is made out of plastics, so they are probably not soft touch. Here is the bad quality picture from Farnell

    144114307-40.jpg

    datasheet: http://www.farnell.com/datasheets/105152.pdf

    direct link at Farnell: http://uk.farnell.com/multicomp/cr-bab-6-d/knob-15-7mm-black-no-line/dp/1441143?_requestid=87898

    Also, Re`an`s 10mm wide, soft touch P675 is perfect when dense packing is necessary.

    P_675.jpg

    Sorry to reply to such an old thread, but it's been a long time since I was on here. This is EXACTLY the sort of knob I've been looking for for a long time. Thanks for pointing this out. 26 pence seems a decent enough price too.

  3. I'm very impressed with the USBtinyISB dongle from Ladyada.  See http://www.ladyada.net/make/usbtinyisp/.  It even has clean support for Linux.  Has anyone here used it?  Does anyone here know if it's possible to come up with something like this for use with PICs?  I have a hard time dealing with Windows and I can't seem to find any other decent burners.  I'm still looking for a decent general eprom solution.  A dongle like this for PICs would be very very nice.

  4. well i can do larger panels... only engraving half at a time.. then flipping it around to do the rest. 

    my problem with doing larger panels is the post that supports the head of the machine.  larger panels would hit the post when the table moves back.  (shoulda coulda built a gantry style machine)

    is there any .dxf's  or plain old image files available for those panels that i could check out?

    Check out some of the freely-available modular synth front panels for a test.  If it works out, I'd like to get a couple Wogglebug panels from you.

  5. The issue of multicarts for vintage video games has been rolling around in my mind for quite some time.  All the really good ones are no longer available, so I thought if I could learn the bare metal of PICs, particularly the PIC16F88, I could make my own.  Can I get some suggestions for books to read on microcontrollers?

    There are dumb multicarts and smart ones.  Dumb ones aren't much more than a large ROM and some dip switches.  In a smart multicart, a microcontroller translates addresses.  Any arbitrary swath of memory can be presented as a ROM of whatever size.  So, when the pic first powers up, it shows the menu program.    The pic is told which rom to load up through an otherwise unused IO port and then the game starts.

    My fantasy multicart would be one that accepts a DOS-formatted SD card, so I guess I'd need a beefy PIC to handle that.  Any comments?

  6. Oh, maaan. Why is it so important? it don`t fit! Check the attachment. Blue lines are mine, reds are unaligned from original. You should sometimes just take answers for granted.

    Another thing, I`m not going to copy that design, but If you do it and send me what to cut/engrave I can make it. But only on Rowmark material. Steel you can get only row lasercut without any graphics nor paint.

    I'm sorry.  That was sloppy of me.  I meant that I'm not picky about whether the buttons in question are aligned one way or the other.  I now see what you mean.

  7. The reason I changed a bit ladyada design is that buttons aren`t aligned  ??? So turning caps 90deg wouldn`t help.  could make you panel like this one with proper holes but only out of Rowmark material with sub-panel and not meal. If you like this texture material i have left I can make it for you. http://www.flickr.com/photos/fibra/sets/72157604783882497/

    Comparing the pics, I don't see where the alignment changes.  It just seems that the Rest, Accent, and Slide buttons were rotated.

    I think I'll look into painting a metal panel so I can get the white keys look.  In particular I crave a front panel like the one Mome Rath put on serial number 122 (see http://www.ladyada.net/make/x0xb0x/gallery.html).

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