2 layers160 × 100 mm
CLOCK
Desval27/FormantKO
Knock-off of the Elektor Formant Synthesizer project with the initial goal of being quasi-authentic and secondary goal undecided. Probably tweaks of some kind.
135 partsMIT
2 layers160 × 100 mm
ADSR CONTROLLER
Desval27/FormantKOKnock-off of the Elektor Formant Synthesizer project with the initial goal of being quasi-authentic and secondary goal undecided. Probably tweaks of some kind.
- Size
- 160 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 77
- Nets
- 78
- Pads
- 223
- Tracks, vias
- 600, 26
- Pours
- 22
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 May 2026
- Updated
- 28 Aug 2026
Overview
ADSR CONTROLLER is an open-source printed circuit board by Desval27, from the Desval27/FormantKO repository on GitHub, published under the MIT licence. It is a 2-layer board of 160 × 100 mm with 77 parts on 78 nets, routed with 600 tracks and 26 vias.
It is built around the S1A, S1M and S2A, with the S2B, S2M and S3A among its other parts. Its parts include 30 resistors, 22 connectors, 6 ICs, 6 diodes and 4 capacitors. It belongs with the audio and music boards of this library.
Main components
8
S1A
SMA(DO-214AC)1 Independent 1.1V@1A 1A 30A 50V 5uA@50V SMA(DO-214AC) Diodes - General Purpose ROHSDiodes IncorporatedDiodes - General PurposeS1M
SMA(DO-214AC)-65℃~+150℃ 1 Independent 1.1V@1A 1A 1kV 5uA@1kV SMA(DO-214AC) Diodes - General Purpose ROHSDiodes IncorporatedDiodes - General PurposeS2A
SMA(DO-214AC)-55℃~+150℃ 1.1V@2A 2A 50V 5uA@50V Independent SMA(DO-214AC) Diodes - General Purpose ROHSShandong Jingdao MicroelectronicsDiodes - General Purpose
S2B
SMB(DO-214AA)-55℃~+150℃ 1.15V@2A 100V 2A 50A 5uA@100V Independent SMB(DO-214AA) Diodes - General Purpose ROHSLGEDiodes - General PurposeS2M
SMB(DO-214AA)-55℃~+150℃ 1.1V@2A 1kV 2A 50A 5uA@1kV Independent SMA(DO-214AC) Diodes - General Purpose ROHSMDDDiodes - General PurposeS3A
SMB-65℃~+175℃ 1 Independent 1.1V@3A 100A 3A 50V 5uA@50V SMB Diodes - General Purpose ROHSBORNDiodes - General PurposeS3B
SMA(DO-214AC)-55℃~+150℃ 1.15V@3A 100V 10uA@100V 3A 80A Independent SMB(DO-214AA) Diodes - General Purpose ROHSLGEDiodes - General Purpose
S3M
SMC(DO-214AB)-65℃~+150℃ 1 Independent 1.15V@3A 10uA@1kV 1kV 3A SMC(DO-214AB) Diodes - General Purpose ROHSDiodes IncorporatedDiodes - General Purpose
README
MFOS/panels/ANALOG/README.mdParts
77| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100k | FormantKO:R_Axial_Horizontal | R1, R2, R4, R8, R9, R10, R13, R14, R21, R26, R27 |
| 6 | OpAmp | FormantKO:DIP-8 | IC1, IC2, IC3, IC4, IC5, IC6 |
| 5 | BC109C | FormantKO:TO-18_Wide | T1, T2, T3, T4, T5 |
| 4 | 33k | FormantKO:R_Axial_Horizontal | R11, R16, R22, R30 |
| 4 | DUS | FormantKO:DUS | D1, D2, D3, D6 |
| 3 | 10k | FormantKO:R_Axial_Horizontal | R5, R17, R23 |
| 3 | 4k7 | FormantKO:R_Axial_Horizontal | R3, R7, R18 |
| 3 | GND | FormantKO:Wire_1x01_General | J9, J10, J15 |
| 2 | 10µ | FormantKO:CP_Axial_900 | C3, C4 |
| 2 | 27k | FormantKO:R_Axial_Horizontal | R6, R24 |
| 2 | 5k6 | FormantKO:R_Axial_Horizontal | R12, R15 |
| 2 | 6k8 | FormantKO:R_Axial_Horizontal | R25, R28 |
| 2 | DUG | FormantKO:DUG | D4, D5 |
| 2 | SW | FormantKO:PanelConnector_1x03 | S1, S3 |
| 1 | 10n | FormantKO:C_Rect_300 | C1 |
| 1 | 1M | FormantKO:PanelConnector_1x03 | P2 |
| 1 | 1k | FormantKO:Potentiometer_Trimmer_PinSwap | P1 |
| 1 | 1k | FormantKO:R_Axial_Horizontal | R19 |
| 1 | 1k | FormantKO:Potentiometer_Trimmer | P3 |
| 1 | 220R | FormantKO:R_Axial_Horizontal | R20 |
| 1 | 2µ2 | Capacitor_THT:CP_Radial_Tantal_D4.5mm_P5.00mm | C2 |
| 1 | 330R | FormantKO:R_Axial_Horizontal | R29 |
| 1 | CardBracket | FormantKO:CardBracket | MH1 |
| 1 | CardConnector | FormantKO:CardConnector | J1 |
| 1 | GATE SELECT | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | J2 |
| 1 | IOS SELECT | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | J3 |
| 1 | MODE | FormantKO:PanelConnector_1x04 | S2 |
| 1 | MonoJack | FormantKO:PanelConnector_1x02 | J4 |
| 1 | P2a | FormantKO:Wire_1x01_General | J11 |
| 1 | P2b | FormantKO:Wire_1x01_General | J12 |
| 1 | S1a | FormantKO:Wire_1x01_General | J5 |
| 1 | S1m | FormantKO:Wire_1x01_General | J16 |
| 1 | S2a | FormantKO:Wire_1x01_General | J6 |
| 1 | S2b | FormantKO:Wire_1x01_General | J7 |
| 1 | S2c | FormantKO:Wire_1x01_General | J17 |
| 1 | S2m | FormantKO:Wire_1x01_General | J13 |
| 1 | S3a | FormantKO:Wire_1x01_General | J14 |
| 1 | S3b | FormantKO:Wire_1x01_General | J19 |
| 1 | S3m | FormantKO:Wire_1x01_General | J18 |
| 1 | SQR in | FormantKO:Wire_1x01_General | J8 |
Questions
How big is the ADSR CONTROLLER PCB?
It measures 160 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ADSR CONTROLLER use?
77 parts, built around the S1A, S1M, S2A and S2B. 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 ADSR CONTROLLER KiCad files?
From the Desval27/FormantKO repository on GitHub, at the commit this page was made from: the board is modules/ADSR_CONTROLLER/ADSR_CONTROLLER.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ADSR CONTROLLER design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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