Rothwell Love Squeeze

Here's a nice little compressor that should be a fairly easy build. It doesn't have the squish of a DynaComp, but goes for a more subtle compression like the Orange Squeezer. Board mounted pots and an easy fit in a 1590B. Here's the schematic for reference.

BearFoot FX Baby Blue OD

Here's Bjorn's Baby Blue overdrive. Fairly straight forward JFET circuit with hard clipping in the 2nd stage. The clipping diodes in the original are (massive) 2A1200s, but other silicon diodes will work–socket and experiment. The JFETs used in the original aren't confirmed, but I've laid it out for GSD pinout. Pots are board mounted and should fit in a 1590B. More info here.

Also, I've added extra holes on the PCB for the 470nF caps in case you want to use electrolytic capacitors.

Haunting Mids V3

Here a Black Friday Fuzz layout to compete with your Christmas shopping. The Haunting Mids is a one knob variation of a Big Muff. The Sustain control is a trimmer internally and the tone section and recovery stage have been removed. Great one for bass! Should be an easy fit in a 1590B or even a 1590G.

Spaceman Effects Saturn V

Here's the Spaceman Saturn V boost pedal. It's a pretty unique booster and uses depletion mode LND150N3-G MOSFETs. In original units, there are 2 resistors in series going to each drain of the transistors. They essentially create a 4.7k resistor using some really uncommon values. (It appears that the only reason for that is for more interesting guts. And lets be real, Spaceman has some of the best looking pedal guts around.) I've included room for the ferrite beads of the originals to fit on the board (these reduce RF noise) and if you wire the pots off board you can probably fit it in a 1590a. More info and schematic found here.

Dwarfcraft Great Destroyer

Here's a fun sputtery beast for Fuzz Friday. Like many of Dwarfcraft offerings, this ones got a lot of character and goes from fuzz to experimental with just a few knob turns. I've laid it out so you can fit it in a 1590B long-ways (much like a zVex pedal). Here's the schematic for reference.

Wampler Hot Wired V1

The Hot Wired is a dual channel dirt box offering distortion and overdrive modeled after the tones used by Nashville session artist Brent Mason. I've laid it out for board mounted pots with the board mounted vertically in the enclosure. I laid it out with a 1590BB in mind, but you might be able to make it work in a 125B as well.

Skippy Tremolo

This is Moosapotamus' take on the Vox Repeat Percussion tremolo. The Skippy keeps the character of the original, but with more control while covering a much wider range of tones. There's also the option to use the modern 2N6027 instead of the vintage 2N2646. And you can plug in an expression pedal to control the speed of the effect. I've changed the tone switch to a pot for more fine tuning. More info here.

Build doc here.

Earthquaker Devices Palisades

The mother of all TS808 derivatives/variants, the Palisades incorporates just about every mod to the classic Tube Screamer circuit. Two rotary switches control the bass response (Bandwidth) and clipping (Voice), one toggle bypasses the input buffer while the other is a bright switch, a footswitch selects between 2 separate gain pots, and with an added boost section to round it all off. All 5 pots are board mounted, but there will still be a good bit of off board wiring. Schematic can be found over on FSB. It's laid out for a 1790NS enclosure just like the original.

And because I'm sure the off board wiring isn't the clearest, here's a full wiring diagram:

Hopefully that clarifies any questions and doesn't raise more... haha!

Chunk Systems Brown Dog

Got a bass fuzz for Fuzz Friday this week. It's a gated fuzz with both clean and dirty level controls, an envelope jack to use with funk-style effects, and a soft/hard clipping switch. From the manufacturer:

The Brown Dog enables you to produce rampaging waves of meat with your bass guitar while still keeping your basslines tight and letting the character of your instrument's tone shine through. With two fuzz modes (hard and soft), a mixing stage and a unique gating circuit the Brown Dog gives you a wide range of fuzzy and synthy bass tones.

I've laid it out for board mounted pots and will probably fit best in a 125B, but it will probably fit in a 1590B if you omit the envelope jack.