2 layers91.2 × 108.2 mm
2 layers94.2 × 108.2 mm
Attenuverter
Len42/Synth50Eurorack synthesizer module designs
- Size
- 94.2 × 108.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 32
- Pads
- 170
- Tracks, vias
- 338, 14
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 9 Dec 2021
- Updated
- 27 Nov 2024
Overview
Attenuverter is an open-source printed circuit board by Len42, from the Len42/Synth repository on GitHub. It is a 2-layer board of 94.2 × 108.2 mm with 50 parts on 32 nets, routed with 338 tracks and 14 vias.
Its parts include 21 resistors, 9 connectors, 6 capacitors, 4 ICs and 2 diodes. It belongs with the audio and music boards of this library.
README
modules/Noise-SH/README.mdNoise / Sample & Hold
4HP Eurorack Module
Features
- White and pink(ish) noise output
- Sample-and-hold with variable slew rate
- S&H can be triggered by an internal clock or external input
- Internal clock is output on the trigger jack when selected
Notes
This module is built using the Delptronics Module Construction Set which includes PCBs for the front panel controls and other components. The PCB layout file is just a guide showing how I placed the components on the Delptronics boards. (It's a bit of a mess - sorry!)
Please note that I am a hobbyist, not a trained electronics engineer. No guarantees!
Acknowledgements
Software Used
KiCad 5.1.10-1
© 2022 Len Popp
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100K | -lmp-misc:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R5, R7, R11, R13, R14, R15, R18 |
| 5 | 200K | -lmp-misc:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R8, R16, R17, R19 |
| 4 | 100K | -lmp-synth:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1, RV2, RV3, RV4 |
| 4 | 100N | -lmp-misc:C_Disc_D5.0mm_W2.5mm_P2.50mm | C3, C4, C5, C6 |
| 4 | WQP-PJ398 | -lmp-synth:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical | J1, J2, J3, J4 |
| 2 | 10U | -lmp-misc:CP_Radial_D5.0mm_P2.50mm | C1, C2 |
| 2 | 1K | -lmp-misc:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R21 |
| 2 | 33K2 | -lmp-misc:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R12 |
| 2 | 4K7 | -lmp-misc:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | 51R | -lmp-misc:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R20 |
| 2 | Conn_Back | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Horizontal | J6, J8 |
| 2 | Conn_Front | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J5, J7 |
| 2 | LED_Bidi | LED_THT:LED_D3.0mm | D1, D2 |
| 2 | LM4040 | -lmp-misc:TO-92-2_Inline | U3, U4 |
| 2 | Logo_CC_BY | -lmp-misc:Logo_CC_BY | G1, G2 |
| 2 | Logo_OSHW | -lmp-misc:Logo_OSHW | G3, G4 |
| 2 | TL074 | Package_DIP:DIP-14_W7.62mm | U1, U2 |
| 1 | Conn_Eurorack_Pwr_10 | -lmp-synth:IDC-Header-Eurorack-10-TH | J9 |
Questions
How big is the Attenuverter PCB?
It measures 94.2 × 108.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Attenuverter use?
50 parts. 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 Attenuverter KiCad files?
From the Len42/Synth repository on GitHub, at the commit this page was made from: the board is modules/Attenuverter/Attenuverter.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Attenuverter design in my own project?
Its repository states no licence, so its author keeps all rights: ask Len42 before reusing the design.
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