Ioboard

B0rgar·MFOS-VCA

About the Ioboard PCB

Ioboard is an open source PCB design by B0rgar, published on GitHub. It is a 2-layer board measuring 72.2 × 108 mm, with 83 components from 28 distinct parts.

Other key parts include the TL074P and LM13700N. By type, the board carries 46 resistors, 6 jumpers, 6 capacitors, 4 transistors, 2 ICs and 2 switches.

From the project

dual MFOS VCA based on board by Gerbster.nl

Ray 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.

Ioboard, from the project README — From the project README

Main components on the Ioboard

TL074P LM13700N

Ioboard bill of materials (BOM)

83 components, 28 distinct parts.

Qty	Part	Footprint	Refs
1	TL074P	DIL14	IC1
1	LM13700N	DIL16	IC2
2	2N3904	TO92	Q1, Q3
2	2N3906	TO92	Q2, Q4
4	—		@HOLE0, @HOLE1, @HOLE2, @HOLE4
8	PJ301BMPJ301BM	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
2	100k	EVUF	BIAS_1, BIAS_2
2	50k	EVUF	CV_ATTN_1, CV_ATTN_2
4	—	1X06	JP1, JP2, JP3, JP4
2	—	1X04	JP5, JP6
1	—	ML10	PWR0
2	—	M9040P	S1, S2
4	.1uf	C050-024X044	C1, C2, C3, C4
2	10uf	E2,5-5	C6, C7
2	100k	S64YW	R1, R2
2	2k	S64YW	R3, R4
2	2M	0204_7	R5, R6
2	150R	0204_7	R7, R27
14	100k	0204_7	R8, R14, R16, R17, R18, R22, R23, R28 +6
2	470k	0204_7	R9, R29

Show 8 more

Qty	Part	Footprint	Refs
2	47k	0204_7	R10, R30
2	1k	0204_7	R11, R31
2	4.7k	0204_7	R12, R32
6	2k	0204_7	R13, R15, R21, R33, R35, R41
2	120k	0204_7	R19, R39
4	20k	0204_7	R20, R26, R40, R46
2	470R	0204_7	R24, R44
2	30k	0204_7	R25, R45

Ioboard design files

The KiCad project lives in the B0rgar/MFOS-VCA repository on GitHub; these links point at the commit this page was built from.

Layoutioboard.kicad_pcb
Schematicioboard.kicad_sch

Ioboard: common questions

How big is the Ioboard PCB?

The Ioboard measures 72.2 × 108 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ioboard?

83 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the Ioboard design files?

From the B0rgar/MFOS-VCA repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Ioboard design in my own project?

The repository has no license, so all rights stay with B0rgar. Use it as a reference, and ask the author before reusing the design.