2 layers50 × 50 mm
2 layers50 × 50 mm
Breadbox
cillian64/blueboxes2Exciting bass guitar orientated DIY effects pedals
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 121
- Pads
- 251
- Tracks, vias
- 258, 3
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 23 May 2016
- Updated
- 24 May 2020
Overview
Breadbox is an open-source printed circuit board by cillian64, from the cillian64/blueboxes repository on GitHub. It is a 2-layer board of 50 × 50 mm with 51 parts on 121 nets, routed with 258 tracks and 3 vias.
It is built around the LM358N. Its parts include 31 connectors, 6 capacitors, 5 resistors, 4 ICs and 1 diode. It belongs with the audio and music boards of this library.
Main components
1README
README.mdblueboxes
Exciting bass guitar orientated DIY effects pedals
DI
- DI box for practice with headphones or a consumer hi-fi amp
- Inputs:
- Unbalanced mono Hi-Z from guitar (TS)
- Unbalanced stereo line-level backing (TRS)
- Outputs:
- Unbalanced stereo line-level to amp (RCA)
- Unbalanced stereo headphone-level (TRS)
- Controls:
- Instrument volume (mono logpot)
- Output volume (stereo logpot)
- on/off switch
- Inside:
- Hi-Z opamp with gain control for instrument
- dual op-amp buffer on instrument
- summing network into stereo opamp outputs
DSP
- Platform for custom DSP effects
- Inputs:
- Unbalanced mono hi-Z from guitar (TS)
- Outputs:
- Unbalanced mono (TS)
- Controls:
- Rotary encoder with push
- 4-digit 7-seg LED
- Stomp-switch for on/thru
Silly Fuzz
- Simple silicon clone of Fuzz-Face
- Inputs:
- Unbalanced mono hi-Z from guitar (TS)
- Outputs:
- Unbalanced mono (TS)
- Controls:
- Stomp-switch for on/thru
- Volume log-pot
- Fuzz-level pot
Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | CONN | breadbox:Pin_Header_Straight_1x12 | P15, P16, P17, P18, P19, P20, P22, P24 |
| 5 | 100n | Capacitors_SMD:C_0603 | C1, C2, C3, C4, C5 |
| 4 | LM358N | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U1, U2, U3, U4 |
| 2 | 100k | Resistors_SMD:R_0603 | R2, R3 |
| 2 | 1M | Resistors_SMD:R_0603 | R1, R4 |
| 1 | 1+ | breadbox:Pin_Header_Straight_1x03 | P6 |
| 1 | 1- | breadbox:Pin_Header_Straight_1x03 | P7 |
| 1 | 100n | agg:0603 | C6 |
| 1 | 1OUT | breadbox:Pin_Header_Straight_1x03 | P12 |
| 1 | 2+ | breadbox:Pin_Header_Straight_1x03 | P8 |
| 1 | 2- | breadbox:Pin_Header_Straight_1x03 | P9 |
| 1 | 2OUT | breadbox:Pin_Header_Straight_1x03 | P13 |
| 1 | 3+ | breadbox:Pin_Header_Straight_1x03 | P10 |
| 1 | 3- | breadbox:Pin_Header_Straight_1x03 | P11 |
| 1 | 3OUT | breadbox:Pin_Header_Straight_1x03 | P14 |
| 1 | 4+ | breadbox:Pin_Header_Straight_1x03 | P26 |
| 1 | 4- | breadbox:Pin_Header_Straight_1x03 | P27 |
| 1 | 4OUT | breadbox:Pin_Header_Straight_1x03 | P30 |
| 1 | 5+ | breadbox:Pin_Header_Straight_1x03 | P29 |
| 1 | 5- | breadbox:Pin_Header_Straight_1x03 | P28 |
| 1 | 5OUT | breadbox:Pin_Header_Straight_1x03 | P31 |
| 1 | GND | breadbox:Pin_Header_Straight_1x12 | P23 |
| 1 | IN | Pin_Headers:Pin_Header_Straight_1x03 | P1 |
| 1 | IN | breadbox:Pin_Header_Straight_1x03 | P4 |
| 1 | LED | Pin_Headers:Pin_Header_Straight_1x02 | D1 |
| 1 | OUT | Pin_Headers:Pin_Header_Straight_1x03 | P5 |
| 1 | OUT | breadbox:Pin_Header_Straight_1x03 | P2 |
| 1 | PP3 | Pin_Headers:Pin_Header_Straight_1x02 | P3 |
| 1 | R | agg:0603 | R5 |
| 1 | VDD | breadbox:Pin_Header_Straight_1x12 | P21 |
| 1 | VSS | breadbox:Pin_Header_Straight_1x12 | P25 |
The 47 most common of 51 parts.
Questions
How big is the Breadbox PCB?
It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Breadbox use?
51 parts, built around the LM358N. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Breadbox KiCad files?
From the cillian64/blueboxes repository on GitHub, at the commit this page was made from: the board is breadbox/breadbox.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Breadbox design in my own project?
Its repository states no licence, so its author keeps all rights: ask cillian64 before reusing the design.
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