Big Muff Pi
About the Big Muff Pi PCB
Big Muff Pi is an open source PCB design by Network-Direction, published on GitHub. It is a 2-layer board measuring 44.5 × 55.3 mm, with 49 components from 22 distinct parts.
By type, the board carries 22 resistors, 13 capacitors, 4 transistors, 4 diodes and 3 connectors.
It belongs with the audio designs in this gallery.
From the project
Guitar pedal schematics and resources
Big Muff Pi bill of materials (BOM)
49 components, 22 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | BC549 | TO-92_Inline | Q1, Q2, Q3, Q4 |
| 1 | Input | PinSocket_1x02_P2.54mm_Vertical | J1 |
| 1 | +9v | PinSocket_1x02_P2.54mm_Vertical | J2 |
| 1 | Output | PinSocket_1x02_P2.54mm_Vertical | J3 |
| 3 | 100K | PinSocket_1x03_P2.54mm_Vertical | RV1, RV2, RV3 |
| 4 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4 |
| 4 | 1UF 1uF | CP_Radial_D5.0mm_P2.50mm | C1, C3, C6, C8 |
| 3 | 470PF 470pF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C5, C9 |
| 4 | 100NF 100nF | C_Rect_L9.0mm_W5.1mm_P7.50mm_MKT | C4, C7, C12, C13 |
| 1 | 3.9NF 3.9nF | C_Rect_L9.0mm_W5.1mm_P7.50mm_MKT | C10 |
| 1 | 10NF 10nF | C_Rect_L9.0mm_W5.1mm_P7.50mm_MKT | C11 |
| 2 | 39K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R17 |
| 1 | 47K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 4 | 470K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R8, R14, R19 |
| 5 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R9, R11, R12, R15 |
| 1 | 100 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 3 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R13, R20 |
| 2 | 150 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R16 |
| 1 | 22K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 15K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R21 |
| 1 | 3K3 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R22 |
Big Muff Pi design files
The KiCad project lives in the Network-Direction/Audio-Effect-Pedals repository on GitHub; these links point at the commit this page was built from.
Big Muff Pi: common questions
How big is the Big Muff Pi PCB?
The Big Muff Pi measures 44.5 × 55.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Big Muff Pi?
49 components, from 22 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Big Muff Pi design files?
From the Network-Direction/Audio-Effect-Pedals repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Big Muff Pi design in my own project?
The repository has no license, so all rights stay with Network-Direction. Use it as a reference, and ask the author before reusing the design.
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