Geber files contain all the necessary information to manufacture a circuit board. Most Manufacturer should be able to use these files.
I've been using Aisler, in Germany. You can order straight from Aisler using this link: https://aisler.net/p/YQFEDFUC
Note that price and minimum order quantity may vary a lot dependending on manufacturers.
If you would like to use a different manufacturer, download the files here and send them to your manufacturer of choice.
You may have noticed the PCB has 4 potentiometers.
The top 3 are the classic Big Muff controls.
The 4th potentiometer, marked as CUSTOM on the PCB, is optional and is wired to the extension header. Its pins are marked 1, 2 and 3 on the header.
You can use this potentiometer to add an external control to any part of the circuit, replacing the part with wires to the header.
This is the mod I chose for my original Motherboard pedal, as pictured on the front page.
To do this, do not solder the BODY trimpot and wire it to the extension header instead. This will expose the BODY control as an external potentiometer.
Because 2 pins for the trimpot are wired to ground, you actually only need one wire to do this mod.
The left-most pin of the BODY trimpot is wired to pin 1 of the extension header. Then pin 2 and 3 of the extension header are wired to the GND pin.
You can now use the CUSTOM potentiometer instead of the BODY trimpot.
A B25k potentiometer works best for this.
Instead of soldering the PITCH trimpot, wire it to the extension header 1-2-3 pins to be able to control the pitch of the feedback from the CUSTOM potentiometer.
Note: the trimpots left-most pin is always pin 1.
Instead of soldering R31, solder jumper wires to the extension header to use the 4th potentiometer as variable resistor, controling how much signal hits the first clipping stage.
Maybe try a B250k or B500k for this.
Note: I haven't tested this mod !
In place of one of the clipping toggle switch, use the potentiometer to send a variable share of the signal to each diodes selection to get a blend of both textures.
Here's what the PCB looks like with all parts populated.
Read next: /docs/3_Get_the_parts.md