Bmp2
About the Bmp2 PCB
Bmp2 is an open source PCB design by bubbajfett, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 58 × 46.4 mm, with 52 components from 21 distinct parts.
Other key parts include the NJM4558. By type, the board carries 21 capacitors, 19 resistors, 6 diodes, 2 ICs and 1 connector.
It belongs with the audio designs in this gallery.
From the project
collection of guitar pedal PCB layouts in kicad
This is based on a (modified?) Big Muff Op-amp version, that is the "modern op-amp version of the EHX big muff pi".
It is quite a bit more aggressive than the older, discreet transistor BMP versions I've tried.
This is verified. At high sustain, it does motorboat a little in the build I have.
All trademarks are owned by their respective owners.
Main components on the Bmp2
Bmp2 bill of materials (BOM)
52 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | NJM4558 | DIP-8_W7.62mm | U1, U2 |
| 1 | Conn_01x04_Pin | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 2 | B100K | Pot_Underside | RV1, RV2 |
| 1 | A100K | Pot_Underside | RV3 |
| 6 | 4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6 |
| 5 | 100n | C_Rect_L7.0mm_W2.5mm_P5.00mm | C1, C16, C17, C19, C21 |
| 3 | 470p | C_Disc_D5.0mm_W2.5mm_P2.50mm | C2, C7, C11 |
| 3 | 33p | C_Disc_D5.0mm_W2.5mm_P2.50mm | C3, C8, C12 |
| 4 | 4u7 | CP_Radial_D5.0mm_P2.00mm | C4, C6, C10, C18 |
| 3 | 5n | C_Rect_L7.0mm_W2.5mm_P5.00mm | C5, C9, C13 |
| 1 | 3n | C_Rect_L7.0mm_W2.5mm_P5.00mm | C14 |
| 1 | 10n | C_Rect_L7.0mm_W2.5mm_P5.00mm | C15 |
| 1 | 100u | CP_Radial_D8.0mm_P2.50mm | C20 |
| 1 | 1M | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 2 | 270K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3 |
| 6 | 470K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R8, R11, R15, R16, R17 |
| 3 | 47K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R7, R10 |
| 3 | 4K7 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R9, R12 |
| 2 | 27K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R13, R14 |
| 1 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 22R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R19 |
Bmp2 design files
The KiCad project lives in the bubbajfett/kicad-guitar-pedals repository on GitHub; these links point at the commit this page was built from.
- LayoutDistortion/bmp2/bmp2.kicad_pcb
- SchematicDistortion/bmp2/bmp2.kicad_sch
Bmp2: common questions
How big is the Bmp2 PCB?
The Bmp2 measures 58 × 46.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bmp2?
52 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the Bmp2 design files?
From the bubbajfett/kicad-guitar-pedals repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Bmp2 design in my own project?
Yes, under the terms of its CC0-1.0 license, which bubbajfett chose for the repository.
More boards in kicad-guitar-pedals
Revv g4
58 × 57.6 mm71 parts2LCC0-1.014
Triple wreck
59.7 × 62 mm67 parts2LCC0-1.014
Drboogie
58.5 × 57 mm59 parts2LCC0-1.014
Sftii
55.1 × 51.6 mm53 parts2LCC0-1.014
Tweed57
54.9 × 58.7 mm53 parts2LCC0-1.014
Deep blue delay
54.9 × 57.7 mm49 parts2LCC0-1.014
Eq
59 × 56.6 mm48 parts2LCC0-1.014
Tonemachine
58 × 42.1 mm47 parts2LCC0-1.014
Fatdrive
59.1 × 46.9 mm46 parts2LCC0-1.014
Umble
58.1 × 50.3 mm44 parts2LCC0-1.014
Ecstacy
59.3 × 36.8 mm41 parts2LCC0-1.014
Similar boards
KLOR
GEIGEIGEIST
160.2 × 118.3 mm79 parts2LGPL-3.01.2k
ButtonsLEDs
shanteacontrols
390 × 37 mm82 parts2LApache-2.0956
USB
52 × 12.6 mm6 parts2LApache-2.0956
Pots
390 × 93 mm75 parts2LApache-2.0956
PicoGUS Hand386
polpo
29.2 × 75.2 mm43 parts4LGPL-2.0800
Snark barker
schlae
231.1 × 106.7 mm193 parts2LNo license687