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Topics - rullywowr

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Build Reports / YATS (in green)
« on: August 19, 2014, 09:35:26 PM »
Built to 808 specs.  panasonic ECQ-V and Nichicon caps.  TI 4558 IC.  Optical Bypass.  Powdercoated in frog green by me and then laser engraved.

Added a 2p4t switch to the side to select from (stock 4148/asym 4148/BAT41/1n270 sym).  It's nice having those choices there.

Open Discussion / OSH Park - SSS
« on: August 18, 2014, 06:06:09 PM »
Just got a bunch of boards back from OsH and they sent this in with it....

I doubt that many of us DIYers will shell out an extra $89 for fast service, but you may luck out and get in on a 5 day panel for free as I did.

Gonna have to verify some "fresh off the vine " PCBs now...

Open Discussion / Played THE red special today...
« on: July 25, 2014, 05:47:42 PM »
That dumb look on my face is part excitement and part "I hope I don't drop this". Backstage at Queen sound check today.

Also got a couple picks...Brian plays with a 6 pence

Open Discussion / NGD - from the depths of the closet
« on: July 23, 2014, 08:13:34 PM »
Just found this vintage lap steel in the closet!  Wow. Totally psyched. I'm thinking some Pink and them, breathe, great gig in the sky, shine on you crazy diamond etc. 

Open Discussion / Dumb Klon Question...
« on: July 15, 2014, 11:25:51 AM »
In a Klon, why are the resistors (two 68k and the 100k pull down) on the switch?  Is there any specific reasoning behind this?  Why not just include them on the board before the wire run to the switch (wouldn't it be electrically the same?)

I'm leaning towards "because it's Mojo" or "unicorn farts" but I wanted to see what you guys had to say.  Thanks!

Open Discussion / Going Panasonic ECQ-V - A few questions
« on: July 14, 2014, 11:12:05 AM »
I'm set on taking the plunge and "upgrading" my capacitor stash to all Panasonic ECQ-V.  I have selected straight leads (no kink) and all the values from 10n-1uF.  Got a pretty nice cart loaded on Mouser and about to pull the trigger.

Nothing wrong with my current stash which is a mixture of Tayda, Wima, Epcos, and Kemet.  The Panasonics are very nice and sexy and perhaps the best one can use in pedals.

It seems that ECQ-V does not go down below 10n.  :(

I'm just wondering for those who build with ECQ-V...What do you use for values of 1n to 10n?  Epcos or Wima box?  Any tips you can share about the ECQ-V caps would be appreciated!  Thanks :)

Open Discussion / Rebote 3?
« on: July 10, 2014, 10:20:24 AM »
Just curious if anyone has built the Rebote 3 @ tonepad yet?  Looks interesting.  Wonder how it sounds?

After all the "pay per view" stuff over there - it seems that the "lock" has been taken off the schematic now FWIW.   :o

Open Discussion / Soldering on the road...
« on: June 11, 2014, 09:15:30 PM »
Been traveling a lot for work lately. I find myself here in Salt Lake City, UT with a brand new laptop and the power supply managed to break the tip off.  I have a bunch of important presentations tomorrow and of course the adapter is "special" and nobody has it in stock. What's a DIY guy to do?   Pop by radio shack and pick up the required equipment to fix it of course!  A bit of macgyver action, some solder, some stranded wire, and it's charging!  So happy as the laptop is vital to my trip here.

Here's a second DemiCOMP, similar to the purple one I posted a few days ago, made with a Demeter Compulator layout.  I powdercoated the box Dormant Sparkle Blue, laser engraved, and used a "lacquer stik" to fill in select areas.  I'll give a full review on the "lacquer stik" soon.  A big shout out goes to Sean over at SRC Effects ( for making me the Russian Sovtek BMP style knobs.  They are clear with blue swirled around in them and I think are a good fit for the box.  The knobs totally blew me away with their feel and quality and I would recommend his knobs for any project - you won't be sorry.  Hard to believe he makes these himself really.  Totally smooth, no visible mold lines and feel solid as hell.

Switching provided by the six-FO switcher which is taking care of LED duties and true bypass switching via a momentary soft-touch stomp.  I love the way this compressor sounds, once it's really don't want to turn it off.  Nice and clean, sparkling, and even "spanky" sounding.  Coupled with a chorus and I'm in 80's heaven.

Build Reports / Cow Teat - Jubal81's Muu Drive
« on: May 10, 2014, 04:27:17 PM »
Had this done for a while, figured I would post some pics.  He did a great job on the layout and the Muu drive sounds good! My inner 4-year old had to give it a clever name hence...the "Cow Teat."    Actually it's "udderly fantastic" /punmodeoff. 

There is a lot of drive and gristle in there, copping some serious "Money for Nothing" tones as well as some low-medium raunch.  A standard build includes rullywow 3PDT board, 3mm red led, neutrik jacks, and BLMS DC jack with plastic nut.  Powdercoated in dormant sparkle blue with a white self-adhesive inkjet decal and what is now known as the "Juan and Cleggy treatment".

EDIT:  For those with a sharp eye...yes, the DC jack is not connected (I know).  I was doing some tweaks to the pot height and forgot to hook them back up.  derp!

Build Reports / Rollin' in my 'six-fo', with Timbo
« on: May 08, 2014, 08:50:02 PM »
Here is a Timmy in a dormant purple powdercoated enclosure with a laser etched "Nintendo" theme.  Neutrik jacks, BLMS DC jack, and purple flat top UV LED.  A couple of carbon comps in there, strategically placed (meaning I had those values on hand that fit this build).  :)  This build features one of my latest PCB projects, the "Six-Fo" switcher.  The 'six-fo' makes it super easy to add intelligent switching to any pedal project, using low-cost and off-the-shelf components.  Assembly is also quick in less than 5 minutes and includes preprogramed uC. 

Timmy sounds, a Timmy.  Great circuit Paul C. designed and very versatile - has minimal coloring of your tone.  One of my favorites.  It sounds just like my real Timmy, maybe even a bit better.  Build one and then buy a real one...err...or the other way around.  :)

The 'six-fo' switcher is a result of a lot of blood, sweat, and unsigned long variables.  It will be available at in the next day or so.  I will post a link below to a separate thread regarding the complete details.  It is a microcontroller relay PCB which mounts right on a momentary stomp and "remembers" if it was on/off (memory feature can be disabled).  With a plain vanilla L78L05 it draws less than 3mA in idle (mostly quiescent current from the reg - circuit draws under 1mA) and has a new, very advanced debouncing algorithm - meaning you can use it with straight-up any momentary switch (works excellent with Tayda and BLMS $2.00 switches).  The ratings of the components are in the neighborhood of way over 100,000 stomps...and it does it all without any mechanical clicking.  I like the ease which it allows you to mount the PCB while taking care of your switching/wiring/powering duties - all in style! 

Build Reports / Univibe (Harbinger One!)
« on: May 04, 2014, 06:32:00 PM »
Finally got around to boxing this one up.  Great sounding pedal.  Wish I could coax a little more "lushness" out of it...maybe change the LDRs down the line or try 18V adapter...but it works great.  Copious amounts of ribbon cable, 1uF caps, and transistors are essential to this build.   ;D 

Shooting for a 1960's psychedelic poster look with a little homage to Jimi at the top.  Powdercoated myself in Neon green with a self-adhesive inkjet white decal on top.  A little envirotex, the biggest ass knob I have ever used, and call it a day.

Build Reports / Crystal Muff
« on: May 01, 2014, 10:48:54 PM »
This is a repost of my entry for the Spring contest, however I figured I would post it in the build reports.  This pedal actually came in really handy at a trade show last weekend where I was's really handy to demonstrate to someone how a pedal's guts look without having to take the cover off.  Even better when it makes sounds and lights up and they can actually play it!

Crystal Muff - perhaps the most 'transparent' muff of all time  ;D
Circuit: Op Amp Muff (using "Muff Opportunity" PCB from

This is a classic "in your face" muff circuit based on the EH Op-Amp muffs circa 1978.  The enclosure is transparent but the sound is thick and aggressive.  Really nails Smashing Pumpkins, Bush, and a lot of other 90's bands' hard-hitting fuzz tones.  Built with no mods, although I have been swapping out the opamps for different flavors because that's how I get down.

For the enclosure, I had an idea to do something original and different, and that was to roll my own enclosure using 1/8" acrylic.  Why?  Why not? :)

I used the dimensions of a 1590B from the spec sheet and put those numbers as well as the acrylic specs into this awesome Box Generator site (  If you have access to a laser engraver or CNC, you gotta try this out!  I took the PDF generated from the site and used CorelDRAW to draw the artwork and prep for vector cutting/raster engraving.  Holes are aligned perfectly since I didn't have to drill any.  The artwork was engraved from the inside of the box because it "pops" just like on acrylic awards/trophies.   A 30w Epilog laser cutter was used to cut each panel and all the holes/artwork to exacting dimensions.  Had a couple of revisions due to the whole 3mm vs actual 1/8" acrylic debate but it came together great.  The box fits together so tightly that glue is not needed, and the enclosure can easily be assembled by hand like Lego or a jigsaw puzzle.  You can see the interlocking "fingers" on the sides.  A flat-top UV-purple LED completes the enclosure  It is very sturdy, no worries about stomping on it, however it is prone to scratching etc because it is just acrylic after all.

Here is the gut shot...hope you don't mind that I left the bottom cover on :)

Signal chain = my lab's 'beater' Kramer Pacer -> Crystal Muff -> POS Princeton SS 10w practice amp

Build Reports / DemiCOMP (Demented Compressor)
« on: May 01, 2014, 07:47:58 PM »
Here is a DemiCOMP compressor built with my "Demented Compressor" PCB - inspired by the Demeter Compulator. Really digging the sound of this circuit.  It makes clean passages just "pop" with a little extra something when dialed in.  I threw an old Boss chorus after it and was reliving some 1980's hair metal ballads for like an hour.

I powdercoated the enclosure with Dormant Purple Sparkle and laser engraved the top.  A white LED, Neutrik Jacks, and RW 3PDT breakout board completes the build.  A pretty easy build, the hardest part is sourcing the VTL5C10 as this optocoupler is required (a regular LDR and LED won't cut it...I tried!)  I think this may be staying on one of my boards for a while!  Planning on getting a video demo uploaded in the next day or so.

Open Discussion / Dunlop "Fatpants"
« on: May 01, 2014, 02:32:04 PM »
Just saw this and reminded me of a certain MB board...

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