Fat bastard lead
About the Fat bastard lead PCB
Fat bastard lead is an open source PCB design by a-wai, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 180 × 35 mm, with 36 components from 24 distinct parts.
Other key parts include the ECC83. By type, the board carries 16 resistors, 13 capacitors, 5 connectors and 2 ICs.
It belongs with the audio designs in this gallery.
From the project
2-channels hybrid bass guitar preamplifier designed for highly saturated sound
This documentation describes Open Hardware and is licensed under the CERN OHL v.1.2.
You may redistribute and modify this documentation under the terms of the CERN OHL v.1.2. (http://ohwr.org/cernohl).This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE.
Main components on the Fat bastard lead
Fat bastard lead bill of materials (BOM)
36 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | ECC83 | Valve_Noval-B9A_Belton-VT9-PT_Socket | U1, U2 |
| 1 | LD_12V | PinHeader_1x02_P2.54mm_Horizontal | J1 |
| 1 | LD_IN | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | LD_GAIN | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | LD_OUT | PinHeader_1x02_P2.54mm_Horizontal | J4 |
| 1 | HT_IN | TerminalBlock_RND_205-00001_1x02_P5.00mm_Horizontal | J5 |
| 3 | 1µ | C_Rect_L7.2mm_W4.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1, C3, C7 |
| 1 | 500p | C_Disc_D11.0mm_W5.0mm_P5.00mm | C2 |
| 2 | 22n | C_Rect_L13.0mm_W4.0mm_P10.00mm_FKS3_FKP3_MKS4 | C4, C6 |
| 1 | 1n | C_Rect_L13.0mm_W4.0mm_P10.00mm_FKS3_FKP3_MKS4 | C5 |
| 3 | 100n | C_Rect_L19.0mm_W6.0mm_P15.00mm_MKS4 | C8, C11, C12 |
| 1 | 10µ/450V | CP_Radial_D13.0mm_P5.00mm | C9 |
| 1 | 33µ/450V | CP_Radial_D16.0mm_P7.50mm | C10 |
| 1 | 360p | C_Disc_D11.0mm_W5.0mm_P5.00mm | C13 |
| 1 | 68k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1 |
| 3 | 1.8k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R2, R5, R13 |
| 3 | 220k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R12, R14 |
| 2 | 470k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R4, R7 |
| 2 | 100k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R6, R10 |
| 1 | 1M | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R8 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 27k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R9 |
| 1 | 330k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R11 |
| 1 | 2.2k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R15 |
| 1 | 1k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R16 |
Fat bastard lead design files
The KiCad project lives in the a-wai/fat_bastard repository on GitHub; these links point at the commit this page was built from.
Fat bastard lead: common questions
How big is the Fat bastard lead PCB?
The Fat bastard lead measures 180 × 35 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Fat bastard lead?
36 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the Fat bastard lead design files?
From the a-wai/fat_bastard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Fat bastard lead design in my own project?
Yes, under the terms of its CERN-OHL-1.2 license, which a-wai chose for the repository.
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