Mainboard
About the Mainboard PCB
Mainboard is an open source PCB design by B0rgar, published on GitHub. It is a 2-layer board measuring 108 × 48.3 mm, with 108 components from 23 distinct parts.
Other key parts include the LM4558N. By type, the board carries 54 resistors, 20 transformers, 12 diodes, 7 jumpers, 7 capacitors and 3 ICs.
From the project
Dual ADSR from gerbster.nl and panel.
imported to kicad. panel made. I regret not changing to thonkicon jacks. PCBS ordered from JLCPCB. will update after building and testing.
Main components on the Mainboard
Mainboard bill of materials (BOM)
108 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | LM4558N | DIL08 | IC1, IC2, IC3 |
| 4 | — | @HOLE0, @HOLE1, @HOLE2, @HOLE3 | |
| 3 | — | 1X02 | JP1, JP5, JP7 |
| 2 | — | 1X06 | JP3, JP4 |
| 2 | — | 1X03 | JP6, JP8 |
| 1 | — | ML10 | PWR0 |
| 14 | BC547 | TO92-CBE | T1, T3, T5, T6, T8, T10, T11, T12 +6 |
| 6 | BC557B | TO92-EBC | T2, T4, T7, T9, T15, T17 |
| 12 | — | DO35-7 | D1, D2, D3, D4, D5, D6, D7, D8 +4 |
| 2 | 3.3u/35v | E2,5-5 | C1, C6 |
| 2 | 47u/16v | E2,5-5 | C2, C3 |
| 3 | 0.01u | C025-024X044 | C4, C5, C7 |
| 4 | 33k | 0204_7 | R1, R18, R32, R48 |
| 8 | 22k | 0204_7 | R2, R4, R6, R15, R33, R35, R37, R45 |
| 6 | 10k | 0204_7 | R3, R5, R24, R34, R36, R54 |
| 2 | 150k | 0204_7 | R7, R38 |
| 10 | 47k | 0204_7 | R8, R11, R13, R17, R28, R39, R43, R47 +2 |
| 4 | 56k | 0204_7 | R9, R14, R40, R44 |
| 2 | 560k | 0204_7 | R10, R41 |
| 8 | 100k | 0204_7 | R16, R23, R29, R30, R46, R53, R59, R60 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 330 | 0204_7 | R20, R25, R50, R55 |
| 2 | 15k | 0204_7 | R22, R52 |
| 4 | 1k | 0204_7 | R27, R31, R57, R61 |
Mainboard design files
The KiCad project lives in the B0rgar/SRC-140-ADSR repository on GitHub; these links point at the commit this page was built from.
- Layoutmainboard.kicad_pcb
- Schematicmainboard.kicad_sch
Mainboard: common questions
How big is the Mainboard PCB?
The Mainboard measures 108 × 48.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mainboard?
108 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mainboard design files?
From the B0rgar/SRC-140-ADSR repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Mainboard 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.
