This might be the most complicated tremolo pedal ever ... Stereo Tap Tempo Tremolo based in part on the Cardinal using essentially every feature of the TAPLFO. I think the only pins I didn't use are the basic tempo LED and the "next multiplier." The stereo switching is kind of cool. I set it up so that it can run in mono (left channel only), left mono in > stereo out, left TRS in > stereo out, and dual mono in > stereo out. The only thing it doesn't do is sum stereo inputs to mono ... except it kinda does because I also added Harmonic and Vibe modes via a DPDT on/off/on switch (it's accomplished a little different than the Cardinal, but similar cutoff frequencies and it sounds pretty awesome), so you could have a different effect in the right channel and cross it over in the vibe mode. :o
There's also Expression pedal input selectable between the Rate and Multiplier (he wanted the multiplier instead of depth, otherwise I would have used a 3PDT toggle instead of a rotary ... the multiplier is a pain) and sync in/sync out.
(http://jonpattonmusic.files.wordpress.com/2014/01/cosmo-tremolo.jpg?w=500)(http://jonpattonmusic.files.wordpress.com/2014/01/cosmo-tremolo-guts.jpg?w=500)(http://jonpattonmusic.files.wordpress.com/2014/01/cosmo-tremolo-3-e1389533728858.jpg?w=500)(http://jonpattonmusic.files.wordpress.com/2014/01/cosmo-tremolo-2-e1389533766642.jpg?w=500)
The jacks are drilled in the back with exactly enough room to put seven normal right angle plugs next to each other, but something like George L's or straight plugs will fit much easier.
This was for a customer in Switzerland. I hope he's happy with it, it was a HUGE amount of work figuring out all the wiring and switching and I'm not keen on ever building another regardless of price. :p
p.s. I did fix the mistake in the waveform graphic. :P
Holy Smokes. That's epic. :o
And you perfed it ...
Hoping there's a demo forthcoming.
Wow! Gotta hear that thing! 8)
Been working on something similar too, but based on the STM, great job John.
Quote from: jubal81 on January 12, 2014, 08:34:23 PM
Hoping there's a demo forthcoming.
Sure, here's a clip. Direct to the Scarlett into GarageBand, sparkling clean for the amp (with the effects removed). Little bit of reverb. Don't really have time to do a video demo of this one.
[soundcloud]http://soundcloud.com/jon-patton-3/cosmo-tremolo[/soundcloud]
Square Wave stereo > sine wave stereo > Vibe mono (slightly offset wave for some lope) > Harmonic stereo > Vibe stereo (surprisingly awesome) > Harmonic mono
Simply amazing!
That sound is just stunning. Far and away best solid state tremolo I've ever heard. Seriously, Jon, that's a masterpiece.
Quote from: jubal81 on January 13, 2014, 01:49:47 AM
That sound is just stunning. Far and away best solid state tremolo I've ever heard. Seriously, Jon, that's a masterpiece.
Thanks, Jason. :) It's four FETzer valves, so it does sound a little tubey! The channels are almost identical to the Cardinal's full-range band.
Very impressive!
That is simply just ridiculous...and on Vero too. Nice work, Jon.
This is a fantastic build that sounds as good as it looks mate. That middle bit, vibe mono? was mesmerising, you should go write a song with it on that setting right now :)
Holy crap. Incredible build, Jon!
That is insane!
Yep. Mad. In a very cool way.
Superb! 8)
I love it! Haven't expected this amount of drilling from ya Jon haha but I guess it was worth it, awesome stuff, sounds spectacular!
Huge build! And a stunning artwork! Well done, Jon! :D
I'm quite jealous of the guys that got it. This thing sounds amazing! :)
Hector
Wow Jon, that's great. I can see why you wouldn't want to do another one.
It reminds me of a Dr. Scientist pedal...yes, it's on that level! :)
Amazing build
pretty Dr sci, although Ryan would have a 4 layer board in a 125B (!) the crazy legend
Quote from: LaceSensor on January 13, 2014, 04:34:13 PM
pretty Dr sci, although Ryan would have a 4 layer board in a 125B (!) the crazy legend
That circuit board could fit in a 125B even on perfboard (it's pretty much the same size as the one I used for my Tap Tempo Cardinal a while back, which was a two-layer PCB in a horizontal 125), but the 7 jacks and extra toggle and expression rotary --- nnnnnnnope.
That is a seriously kick-ass build Jon! Is there a reason you used 2 different types of jacks? Regardless, I bet if you would build more of these, they'd sell in a heartbeat. Top notch!!
Paul
Quote from: DutchMF on January 13, 2014, 04:47:28 PM
Is there a reason you used 2 different types of jacks?
Yes -- the enclosed jacks are switched. The right input and expression needed to be switched. I used the same type of jack for the left input even though it could have been a normal TRS open jack simply because it fit better and didn't look funny sticking out of the back. I used open jacks for the four on the "out" side because that was the only way they'd all fit and it saved me the trouble of figuring out where to ground the enclosure.
What, no 1590a ;)
Awesome work Jon!
Josh
Quote from: midwayfair on January 13, 2014, 04:41:11 PM
Quote from: LaceSensor on January 13, 2014, 04:34:13 PM
pretty Dr sci, although Ryan would have a 4 layer board in a 125B (!) the crazy legend
That circuit board could fit in a 125B even on perfboard (it's pretty much the same size as the one I used for my Tap Tempo Cardinal a while back, which was a two-layer PCB in a horizontal 125), but the 7 jacks and extra toggle and expression rotary --- nnnnnnnope.
Not tap tempo but:
(http://proguitarshop.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/t/r/tremollescence_blue_geo2.jpg)
6 knobs, 2 switches, hold mode, exp input (rate and depth), true stereo, pan/synch etc
Pretty impressive.
But I digress, and do not mean to take away from your work.
Quote from: LaceSensor on January 13, 2014, 06:05:06 PM
But I digress, and do not mean to take away from your work.
No, it's fine -- the Tremolescence was one of the pedals the customer and I discussed before I agreed to build for him, and I love the Dr. Scientist stuff. I wanted to ensure that he couldn't get an equivalent or better pedal from a commercial source first. (The closest he could get to everything he needed was the Goatkeeper, but I think he said it's not available anymore.)
That's nuts Jon....I dig it
Really awesome Jon!!!
So impressive.
Really cool build Jon.
I'm sure your customer will be stoked with it.
That's outstanding - the vibe-y part is way cool!
That thing is just insanity. Holy moly. Great build, but I'd be throwing in the towel about half-way through. Some really good sounds out of it though. I don't use tremolo much, so I haven't been tempted quite yet to build a replacement for the EH Pulsar that I have on my board.
Again, great looking build.
Hi everyone!
I'm new!
I found tho thread looking for a goatkeeper, the pedal you built is amazing but does not have
the step sequencer and the external audio sync the goatkeeper has.
Does anyone of you has one to sell or can help me in constructing one (a friend of mine could do that but he has not the chip)?
Does anyone of you know something similar?
Sorry everyone for the intromission maybe I'm off-topic but I'm in love of that tremolo and i can't find a way to get something similar :(
Ciao
Andrea
Quote from: bassaround on January 15, 2014, 01:13:59 PM
Hi everyone!
I'm new!
I found tho thread looking for a goatkeeper, the pedal you built is amazing but does not have
the step sequencer and the external audio sync the goatkeeper has.
Does anyone of you has one to sell or can help me in constructing one (a friend of mine could do that but he has not the chip)?
Does anyone of you know something similar?
Sorry everyone for the intromission maybe I'm off-topic but I'm in love of that tremolo and i can't find a way to get something similar :(
Ciao
Andrea
I think the Goatkeeper uses the same chip that's used for the TAPLFO, but with different programming. The sequencer is on board in that. You could, however, trigger a 4017 step sequencer using this LFO. The 4017 is common a decade counter chip, and you can get them all over the place for under a dollar.
This pedal does have an external sync (it uses voltage as a clock source), with instructions provided in the TAPLFO. It would not actually be too difficult to treat an external audio source as a voltage source (like "strum tempo" on the TC Electronics stuff), but I have no idea how accurate it would be.
As someone who has been struggling with MusicPCB's Tap Tempo Tremolo for months, I am in awe.
As always, fantasic work.