Vibe times

[Storing!]

Finished the easyvibe last week. Great piece of gear!
So I decided to try the Univibe. When I read RG's Univibe analysis, I found an interesting piece of info. The original Univibe was bypassed as the lamp was off. The set me thinking about the possibility to turn the separate stages on and off. This meant that the seperate stages needed separate light sources. therefor I used a tremulus lune LFO and leds just as the easyvibe.
Halfway through the project it became clear that if I build it tightly , I could put in some extra stages. This resulted in a 6 stage vibe in which a threepos switch makes 2, 4 or 6 stages possible.  All in all a nice experiment.

Board with four stages on it


Finished. The package is powered with a max1044.


Topside

[R.G.]

Good work Eric! That's some fine handiwork.

[Meanderthal]

 Now that's gotta be the most efficient use of space I've seen since I took my 1st laptop apart! 

[oldrocker]

WOW!!!

[Fuzzy-Train]

I'd hate to de-bug that thing if it didn't work.

Very nice job mang.

[nico13]

Storing!

I understand you're using a MAX1044 as a charge pump. How much voltage does your charge pump output.
Is it OK for powering your unit i.e. does the charge pump provide enough voltage to feed your 7815 voltage regulator?

[jrc4558]

That's a tight but elegant fit! Great job!

[Aharon]

I trully admire people that can do stuff that I would never even dream of doing............wow....you fit all that into a small enclosure like that.
Aharon

[markm]

I trully admire people that can do stuff that I would never even dream of doing............wow....you fit all that into a small enclosure like that.
Aharon

Absolutely!!
Nice work......I would NEVER have attempted that! 

[rocket]

There are a few unused holes, you could easily add a 7th and 8th stage. :-)

What are those 6.3 mm jacks?

Is there any reason to use discrete Darlingtons rather than readymade ones like MPSA14 or BC517/BC516?

[~arph]

Wow! I'm curious what the bottom of the board looks like

[John Lyons]

Can you describe the sound or post a sound clip?
Since the tremulus can really tweak the wave form it would be interesting to hear what the spacing modified wave shape controls would do to the univibe sound. I'm realy curious how the extra stages sound.

Please let us know any more details. Looks nice!

[petemoore]

I'd hate to de-bug that thing if it didn't work.
  No debug ?
  I'd be too scared of a nasty debug mess [you didn't show the bottom...]...no way I'd do that.
  Glad you got one super packed with guts' 'box of vibe !!
  Impressive 1

[squidsquad]

You have frightened me...I may have wire-nightmares!  And after all that...it WORKED???

[caress]

what about using different LFOs to control each LED?  multi-vibe?  hmmm...

[R.G.]

I once did an eight stage vibe. I think I have the layout somewhere...

[caress]

8-stage!  nice...find that layout   

[Mark Hammer]

Ladies and gents, this is where you take great pains to insulate the lid of the box.  When you think of the number of ways and opportunities for the board to short out and "not work" once you put the lid on, you'll get the idea.

That's certainly not a criticism of the "ship-in-a-bottle" meticulousness of this build (I'm a diehard "hey, I've got 3 unused holes in the perfboard; what can I mod?" kinda guy  ) .  Rather, it provides a great illustration of how tight builds require one to think more broadly about packaging so as to avoid heartbreak or troubleshooting nightmares.

The solution need not be all that complex.  Covering the inside of the lid with electrical tape, or simply glueing a piece of thin foam or even cardboard to the lid is fine.

[petemoore]

  I opt for the clear plastic packaging material, the theft prevention type you have use shears on to get new products opened up.
  I routinely save the wider flat pieces, if shaped just right it makes a good battery compartment too.
  Hard cardboard is fine too, but electrical tape could get worn or poked through more easily.

[R.G.]

Here's a great tip. You can buy pressure sensitive adhesive in spray cans. Cut out the insulator you want, then lay it face down on newspaper. Spray the back with adhesive, wait for the solvent to evaporate, then stick the insulator in place. It stays there.