2 layers108 × 48.3 mm
2 layers72.2 × 107.9 mm
Ioboard
B0rgar/MFOS-VCA2dual MFOS VCA based on board by Gerbster.nl
- Size
- 72.2 × 107.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 87
- Nets
- 59
- Pads
- 254
- Tracks, vias
- 363, 29
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 18 Mar 2025
- Updated
- 8 Jun 2025
Overview
Ioboard is an open-source printed circuit board by B0rgar, from the B0rgar/MFOS-VCA repository on GitHub. It is a 2-layer board of 72.2 × 107.9 mm with 87 parts on 59 nets, routed with 363 tracks and 29 vias.
It is built around the LM13700N. Its parts include 46 resistors, 6 capacitors, 4 transistors, 2 ICs and 2 switches.
Main components
1README
README.mdRay Wilsons VCA with panel. based on Eagleproject from Gerbster.nl.
imported to kicad. IO board redesigned for thonkicons jacks. increased distance between boards and changed the nibbles panel made.
PCBS ordered from JLCPCB. will update after building and testing.
Parts
87| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 100k | ioboard:0204_7 | R8, R14, R16, R17, R18, R22, R23, R28, R34, R36, R37, R38, R42, R43 |
| 8 | @HOLE0, @HOLE1, @HOLE2, @HOLE2, @HOLE2, @HOLE4, @HOLE4, @HOLE4 | ||
| 8 | PJ301BMPJ301BM | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_1 | AUDIO_IN_1, AUDIO_IN_2, AUDIO_OUT_1, AUDIO_OUT_2, CV1_1, CV1_2, CV2_1, CV2_2 |
| 6 | 2k | ioboard:0204_7 | R13, R15, R21, R33, R35, R41 |
| 4 | ioboard:1X06 | JP1, JP2, JP3, JP4 | |
| 4 | .1uf | ioboard:C050-024X044 | C1, C2, C3, C4 |
| 4 | 20k | ioboard:0204_7 | R20, R26, R40, R46 |
| 2 | ioboard:M9040P | S1, S2 | |
| 2 | ioboard:1X04 | JP5, JP6 | |
| 2 | 100k | ioboard:EVUF | BIAS_1, BIAS_2 |
| 2 | 100k | ioboard:S64YW | R1, R2 |
| 2 | 10uf | ioboard:E2,5-5 | C6, C7 |
| 2 | 120k | ioboard:0204_7 | R19, R39 |
| 2 | 150R | ioboard:0204_7 | R7, R27 |
| 2 | 1k | ioboard:0204_7 | R11, R31 |
| 2 | 2M | ioboard:0204_7 | R5, R6 |
| 2 | 2N3904 | ioboard:TO92 | Q1, Q3 |
| 2 | 2N3906 | ioboard:TO92 | Q2, Q4 |
| 2 | 2k | ioboard:S64YW | R3, R4 |
| 2 | 30k | ioboard:0204_7 | R25, R45 |
| 2 | 4.7k | ioboard:0204_7 | R12, R32 |
| 2 | 470R | ioboard:0204_7 | R24, R44 |
| 2 | 470k | ioboard:0204_7 | R9, R29 |
| 2 | 47k | ioboard:0204_7 | R10, R30 |
| 2 | 50k | ioboard:EVUF | CV_ATTN_1, CV_ATTN_2 |
| 1 | ioboard:ML10 | PWR0 | |
| 1 | LM13700N | ioboard:DIL16 | IC2 |
| 1 | TL074P | ioboard:DIL14 | IC1 |
Questions
How big is the Ioboard PCB?
It measures 72.2 × 107.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ioboard use?
87 parts, built around the LM13700N. 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 Ioboard KiCad files?
From the B0rgar/MFOS-VCA repository on GitHub, at the commit this page was made from: the board is ioboard.kicad_pcb and its schematic ioboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ioboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask B0rgar before reusing the design.
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