Parasit Studio XOR'cist V2

 Schematic is avaiable HERE.

 

Last Gasp Arts Laboratories Ripplet

 Schematic is avaiable HERE.

Dead Astronaut Pendulum Tremolo+

 Schematic is avaiable HERE.

Demeter Tremulator

 Schematic is aviable HERE.

 

Voodoo Lab Tremolo - 4 knob version

 Schematic is aviable HERE.

Verified by NJGTR. Thanks mate! He also spotted some errors which now is corrected,

 

4ms Pedals Tremulus Lune

 There was a request for 4ms Tremulues Lune with two LFO's but couldn't find a schematic for it. So we're stuck with the normal version. But for this layout I've incorporated an input buffer found in their "Luna" project. Schematic is aviable HERE as well different ways to wire up the rate LED and the bypass LED.

Electro Harmonix The Worm / Madbean Charlatan

 A vintage big box The Worm with some useful improvemnts and mods by Madbean. The power section have been reworked by a voltage doubler and a voltage regulator for 9v to 15v operation. An internal volume trimpot is added. And the unknown original vactrols is replaced by a trio of LDR/LED pair.

Schematic and more information is avaiable HERE.

 

Madbean Headtrip 2

Once again, a guest appearance. Chris at CDC was brave enough to dabbling with some Spin FV-1 processors. Yes, these are SMD parts there is several vendors online that sell adapter boards.

 This one is VERIFIED.

 

Since I started building effects in 2020, there has been a "level up" step I've been avoiding. As the level digital signal processing that is available through industry standard effect makers like TC Electronic, Boss, Line 6 and Strymon filters down to the DIY/hobbyist level - there really is no excuse for not at least TRYING digital signal processing.

The most commonly available engine of these DSP effects is the Spin FV-1 reverb processor. They are about $10-$15 each and have 28 tiny little surface mount legs that need to be soldered to tiny little pads on the circuit board without any bridging. So I've been squeamish and avoided them. Until now (dun dun).

After about 3 years of doing this I felt like my dexterity and soldering iron proficiency had progressed to the point where I shouldn't put this off any longer. I also MUST thank DK pedals for their tutorial that was a serious confidence builder.

This effect contains that chip - soldered to an adapter board designed by MAS Effects, which is attached to my stripboard layout of the Madbean Headtrip 2 FV-1 project. It also contains the algorithm chip from that project featuring the presets designed by Brian of Madbean..

The 5 knobs are for dry and effect level, as well as three parameters that change with each effect preset. There's a lot to cover with this pedal, which is why my video is about 5 times longer than anything I've posted so far... if you make it through all 8 clips, I salute you!!!

Mode 1: Choir - similar to the EQD organizer, with the controls condensed to three knobs: octave down, octave up, and choir (which has a slight delay on the signal)

Mode 2: Filter+Octave - an envelope follower that is controlled by knobs 1&2, with an octave up and down dialed in by knob 3.

Mode 3: Detune+Tremolo - this is similar to the "detune" mode on the Whammy pedal. Its's a faux chorus of sorts. Knobs 2&3 control the speed and depth of the tremolo

Mode 4: Flangecho - an 850ms delay. Length and repeats are knobs 1&2, flanging level in the repeats is knob 3.

Mode 5: Echo+??? - a 975ms delay. Knobs 1&2 are the same as mode 4. Knob 3 controls a multi effect that goes from modulation to buzzy ring modulation to tremolo in the repeats.

Mode 6: Flangeverb - knob 1 is the reverb level, knob 2 is the low cut, knob three blends in a similar flange modulation as on mode 4.

Mode 7: Choirverb - a "shimmer" reverb with verb level on 1, low cut on 2, and octave up & down on knob 3.

Mode 8: 4th/5thverb - reverb level on knob 1, 4th down on knob 2, 5th up on knob 3. This doesn't show quite as much on the video but this is definitely the most organic/analog synth-sounding patch of these 8 (in my opinion)

Now the footswitches: the left switch is a "master on/off" that bypasses the entire circuit.

The right switch kills the input to the effect chip and allows the reverb/delay/choir to trail off naturally. HOWEVER - this will keep the dry blend knob in play and depending on where you have it set, this knob can boost the heck out of your signal. Which can be a good or bad thing... up to you.

Are any of these sounds "usable"? That's a matter of taste, of course, but at the very least, NONE of them are delicate. Thanks for reading this far...

-Chris, CDCE

 

Memphis Tremolo Modulator

 Schematic is avaiable HERE.

Hmm, looks interesting, sort of a one stage J FET phaser?

Stompboxology Tremolo-Matic XVIII

 Schematic and writeup is avaiable at Super Freq.

Monster Effects Swamp Thang

 

 

Demo by Ian!

 

Shoot the Moon Tremolo

 Requested and verified by Ian.

Thanks mate!

...and a short demo by Ian!

 

Electro Harmonix Pulsar - Big box version

 Schematic is avaiable HERE.

EarthQuaker Devices Hummingbird V2

 Based on the more recent version of Hummingbird using the more common 2N6027 programmable unijunction transistor. Schematic is avaiable HERE.

Electro Harmonix Hare Lip

 A forgotten and quite odd one from the early days of EHX. 

Despite being marketed as a "Microphone Echo" and having "Echo" as one of the labels for the controls, this is actually a tremolo circuit with some quirks. There is no "Depth" control as in most tremolo effects, instead there are the "Echo" control which adjust the output level for the LFO signal. "Volume" control adjust the clean signal. "Speed" adjust the LFO rate. 

The schematic is redrawn from a factory schematic dated 1972. Some odd resistor values but I'm pretty sure closest common value will work. Also, the transistors is the same as in Triangle/early Rams Head Big Muffs. They are quite hard to source and Hfe is all over the place. 2N2222's or 2N3904 might be good subs.

Not much info on the web on this one but there is a short writeup HERE. 

 

 

 

 

 

 

 

Frantone Vibutron

 Per request. Included the "Rate mod", a switch that toggles between two speed settings..

Schematic and info HERE.

 

Lastgasp Art Laboratories Tone Mosaique

 900 post. Phew. I think it is time for a couple of weeks break do deal with "outside world" issues.:-o. Will still log in here now and then and eventually upload something if something really interesting shows up.

But here is a cool design from Lastgasp Art traced by Deadend FX, a bitcrucher/tremolo,/ringmod/envelope follower...thing.  Schematic is avaiable HERE.

BYOC Brown Face Harmonic Tremolo

 Per request. Schematic, info and demo HERE.

Parasit Studio The Corruptor V3

 Latest version (V3) of a square wave fuzz with a PLL IC to achieve ring modulation.

Schematic and info is avaiable HERE.

 

 

Electro Harmonix Pulsar

 A modified layout for the old EHX Pulsar which is infamous for its LFO ticking bleedtrough. There is two mods that hopefully can solve it. First, an op amp input buffer and second  the more common mod; separating the power with a small value resistor between the amplifier and the LFO section. LFO section also have its own power filter cap.