This is a PCB for the Big Muff. I design this in Eagle. I used the Part numbering from The Big Muff Page here. With this board you should be able to build any version of the standard Big Muff. Just choose a schematic and match the part numbers to this board.
You can order boards from PCBWay.com.
![](https://i0.wp.com/www.super-freq.com/wp-content/uploads/2021/11/660DF5E7-F8B8-4D82-A873-FB71833500FA-540x720.jpeg?resize=540%2C720)
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The board adds a power filter section and on board LED. This makes for an easy great looking and reliable build.
These are parts I added that are not on the original schematics:
- R1 – 1M pull-down resistor to prevent switch popping
- R24 – 1K to 10K LED Resistor
- D6 – LED any
- D5 – 1N5817 Reverse polarity protection
- R25 – 100r power filtering
- C14 – 47µ to 100µ Power Filter
![](https://i0.wp.com/www.super-freq.com/wp-content/uploads/2021/11/E3DF4D7D-2C0F-48FD-A126-DF152A96D20C-540x720.jpeg?resize=540%2C720)
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BOM
Choose a version of the Big Muff you want to build from the schematics here:
http://www.bigmuffpage.com/Big_Muff_Pi_versions_schematics_part1.html
Match the part numbers on the schematic to the numbers printed on the PCB.
Wiring
![](https://i0.wp.com/www.super-freq.com/wp-content/uploads/2021/11/Muff-Wiring.png?resize=634%2C926)
Drilling Guide
Download the drill guide pdf.
![](https://i0.wp.com/www.super-freq.com/wp-content/uploads/2021/11/Muff-Drill-Guide.png?resize=634%2C926)
Design Guide
Use this plan out your design. Control outlines show diameters of common knobs. The LED outline shows 3mm and 5mm outlines.
Download the design guide pdf.
![](https://i0.wp.com/www.super-freq.com/wp-content/uploads/2021/11/Muff-Design-Plan.png?resize=634%2C926)
Here is a gallery of the completed build. Note! Astute observers will notice that I mixed up the Tone and Volume controls on the enclosure of this first build! Follow the guide above, it is correct Volume is center bottom and Tone is upper left.
![](https://i0.wp.com/www.super-freq.com/wp-content/uploads/2021/11/E3DF4D7D-2C0F-48FD-A126-DF152A96D20C-540x720.jpeg?resize=540%2C720)
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