This is pretty much 2016.
On left, rebuilt my MIDI bass pedals with a better set of pedals.
Stomp boxes on top are delay, DR Q, tremolo, and distortion.
Bass pedals to right are basic analog, saw tooth VCO, a delay and passive filter.
Analog modular on top of it has MIDI to CV, Thomas Henry VCO1, a 2 octave divider module, 4 channel mixer with small patch bay. And my 8 channel sequencer I'm still working on. All modules are perf board.
To the right is my mini top octave synth based on the PAIA OZ with some major mods.
I'm in the HVAC business and it was a mild winter here. I had a lot of time for projects.
Come to think of it, I quit drinking January 4th. I might be a little over focused LOL. there is a drawer full of circuits I built and didn't like.
Oh, and there is an old set of PAIA 2720 modules on the table in the background I'm almost done restoring.
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Joined: Mar 11, 2014 Posts: 746 Location: New Zealand
Audio files: 41
Posted: Fri Apr 29, 2016 1:12 pm Post subject:
YUSYNTH ARP4072 VCF
This is a very nice sounding filter! I only soldered half the pots and jacks for testing, and dryfitted the rest before photos. Didn't realise the jack had fell out until after the camera was put away... (yes, the jack was put back in place.)
I found that this VCF must be trimmed before it'll work properly. So far, self-oscillation is naff, I'll have to muck around with it more
Joined: Mar 11, 2014 Posts: 746 Location: New Zealand
Audio files: 41
Posted: Fri Apr 29, 2016 3:22 pm Post subject:
YUSYNTH VC-Panning Mixer and Output Module
Really, really nice module, this. Yves' designs are always good! I didn't put the VU meters in -- not enough panel real estate.
I'm iffy about the daughterboards, but doing it as one separate board parallel to the pot and jack board didn't work out so well. If I need to, I'll tie them down with some twine and insulating panels.
This is the state it was in when I was actually *using* it for the equinox event... much less noisy even like that than the behringer desk mixer.
Joined: Mar 11, 2014 Posts: 746 Location: New Zealand
Audio files: 41
Posted: Thu May 05, 2016 1:11 am Post subject:
Yusynth ADSR New. I've put jumpers on the back for the two Fast/Slow settings so you can either choose, or hardwire. The pushbutton for Gate is really, really neat
This was partly a challenge to myself to see if I could skweez this into 4HP
This is pretty much 2016.
On left, rebuilt my MIDI bass pedals with a better set of pedals.
Stomp boxes on top are delay, DR Q, tremolo, and distortion.
Bass pedals to right are basic analog, saw tooth VCO, a delay and passive filter.
Analog modular on top of it has MIDI to CV, Thomas Henry VCO1, a 2 octave divider module, 4 channel mixer with small patch bay. And my 8 channel sequencer I'm still working on. All modules are perf board.
To the right is my mini top octave synth based on the PAIA OZ with some major mods.
I'm in the HVAC business and it was a mild winter here. I had a lot of time for projects.
Come to think of it, I quit drinking January 4th. I might be a little over focused LOL. there is a drawer full of circuits I built and didn't like.
Oh, and there is an old set of PAIA 2720 modules on the table in the background I'm almost done restoring.
Congratulations! Well done! All of that-
Btw.What the xxx ist HVAC business??
Built this as a supplemental extra, but I really like it. Is a combo simple 3080 VCA, simple AD/AR envelope and simple sub audio LFO all in one. All things I wanted a little extra of in this rack.
Once I got patching with it, I liked it so well I wish I had room for 2 in this rack.
It's the module on the far right.
I am absolutely dreading tearing this all back down for final paint and graphics.
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Joined: Mar 11, 2014 Posts: 746 Location: New Zealand
Audio files: 41
Posted: Wed May 11, 2016 2:16 am Post subject:
LFLab wrote:
Yusynth VC quadrature LFO, finally working (yay!), no wiring.
Good one, quadrature LFO's are dead useful. Try using it as a clock source, with all inputs
But I bet cutting the front panel for that switch hurt a bit
LFLab wrote:
Ringmod and passive attenuators:
Transformer based?
LFLab wrote:
Serge resonant EQ, with board mount pots (almost no wiring):
How is this one treating you? I've been tempted to have a crack at a layout for this circuit (with no wires ) and I've been wondering how it differs from the Moog Fixed Filter Bank type modules, like the Yusynth one. My Yusynth FFB acts pretty much like a graphic equalizer.
LFLab wrote:
Ian Fritz 5-pulser waveshaper:
This module, I still don't recall what the heck it does. I should do a forum search and find out sometime.
Joined: Dec 17, 2009 Posts: 497 Location: Rosmalen, Netherlands
Posted: Wed May 11, 2016 3:08 am Post subject:
Hi Alan, thanks for the comments, yeah hacking into that front hurt a bit, but I was committed to finishing it, finding a suitable switch is not easy, they are all pretty high off the board.
The ringmod is LM1496 based, pretty simple schematic, I initially also ordered Befaco boards, but there is a LOT of weirdness in there. So I chucked those and rolled my own, started with the schematic that Joe Beuckmann did (see layout section of this forum).
Regarding the resonant eq, it is pretty good. I want to make a FFB and have boards for it, but I want to make the variant using inductors, and am procrastinating on the winding of those. I imagine the resonant eq being sharper, the bands are also quite different so if you use it in a E-M context, it will generate a different sound, stacked sevenths instead of stacked thirds. I still have some boards, I think, it uses 9mm Alpha pots, and SMT quad opamps, it also "some" more room for styroflex caps, but the bigger ones (47nF and 22nF) you probably need to use regular film (matched preferrably, I didn't do that, but I think I'll go back to it one day and do that, some bands are sharper than others).
The 5 pulser is a pulse generator, think of a dot bar VU meter, if you send in a signal, at certain levels when a certain LED would light, it generates a pulse. 5 levels are chosen, spread across the amplitude range, the first one you cannot disengage, the other you can using the switches, yielding (slightly) different timbres. It's a pretty nasty waveshaper.
An 8 channel drum module, based upon the awesome work of Jan Ostman.
The things I changed in his program is that the drums trigger on the leading edge at the inputs, and no accents.
The pitch is semi-fixed (with trimpots) so if I need, I can change the pitch.
(ofcourse I donated 3$ for his work!)
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Been meaning to build a CGS keypad scanner for years, finally got round to it. Outputs is in increments of semitones, whole tone (ie 2 semitones) and fifths. Forgot to make a hole in the front panel for the gate output!!!.
Also put a cannibalised Korg tuner in the same module.
Peter
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Joined: Jun 29, 2007 Posts: 176 Location: North-East England
Audio files: 1
Posted: Wed May 25, 2016 10:58 am Post subject:
Fonik's VCP Sequencer in Wiard 300-ish format:
It took a bit of debugging (mainly due to building some stuff wrong, plus v complex wire-up) now it all works. The panel is Scaeffer, prettified with some art-nouveau graphics I found online....somewhere and turned into hpgl via some tortuous process I've forgotten. It looks very nice sandwiched between my Wiard sequantizer and envelator, and is enjoyable to play witrh.
I did a re-house of the main control box for my crazy speaker installation piece called The Sweet32 Speaker Interrupter-Switcher Installation Thing (Ceci n'est pas la haute-fidélité)*.
I was attempting to include a few more features and improve the amplification part. Previously I had used the LM386 (I had only been doing self-taught electronics for 2 years at that point), and this time I went for a TDA2030A-based kit, but I think that wasn't such a great choice finally either.
Since I didn't want to re-do the entire circuit, I kept the old boards (seen in the center), bypassed the old amp section, and added in the new board on the right (which consists of a couple of PICAXEs, a 4066 plus a simple white noise generator). A buck converter turned out to be a bad idea, generating noise, so I had to squeeze in a separate transformer to power the logic part.
So it's quite the Frankenstein monster in there. I couldn't find an appropriately-dimensioned box, so I made one of Baltic birch plywood.
The installation consists of two panels containing each 47 speakers, 16 of which are wired to the control box, which can interrupt the sound on each channel independently, and randomly select which speakers are active at any one time.
An "Automator" box generates the frequencies that are played, as well as slowly changes the speeds of the interruption and randomness.
If anyone in the Montreal area is interested, it's on display at OBORO thru June 18th.
Simple phase shift oscillator producing a clean sine wave for comparison purposes when trimming the sine output of a VCO. Not going to see much use, but handy little circuit. Based on Elliot Sounds' miniosc.
The timing resistors are mounted in a DIL socket so they can be swapped out, giving a range from 150HZ to 15kHz.
Scope shots of the sine wave, and FFT showing the second harmonic down about 50dB, and the 3rd harmonic in the noise. (Mainly to show off my new scope, Rigol 1054 - liking it a lot )
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) and I've been wondering how it differs from the Moog Fixed Filter Bank type modules, like the Yusynth one. My Yusynth FFB acts pretty much like a graphic equalizer.
I love the construction behind the panel!
