OffsetAtten
About the OffsetAtten PCB
OffsetAtten is an open source PCB design by QuinnFreedman, published on GitHub. It is a 2-layer board measuring 19.1 × 100 mm, with 45 components from 17 distinct parts.
Other key parts include the LM324. By type, the board carries 16 resistors, 10 capacitors, 9 connectors, 2 ICs and 2 diodes.
It belongs with the audio designs in this gallery.
From the project
A collection of free & open source DIY synthesizer module designs for Eurorack
Main components on the OffsetAtten
OffsetAtten bill of materials (BOM)
45 components, 17 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LM324 | DIP-14_W7.62mm | U1, U2 |
| 4 | THONKICONN | THONKICONN_perf | J1, J2, J3, J4 |
| 1 | Conn_01x10_Pin | PinSocket_1x10_P2.54mm_Vertical | J5 |
| 1 | Conn_01x10_Socket | PinSocket_1x10_P2.54mm_Vertical | J6 |
| 1 | Conn_01x07_Pin | PinSocket_1x07_P2.54mm_Vertical | J7 |
| 1 | Conn_01x07_Socket | PinSocket_1x07_P2.54mm_Vertical | J8 |
| 1 | Eurorack_2x5_Power | IDC-Header_2x05_P2.54mm_Vertical | J9 |
| 2 | Board | Board | B1, B2 |
| 4 | B50k | Alpha_Potentiometer_Grounded | RV1, RV2, RV3, RV4 |
| 2 | 3mm | LED_D3.0mm_Clear | D1, D2 |
| 2 | 10uF | CP_Radial_D4.0mm_P1.50mm | C1, C2 |
| 4 | 100nF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C3, C4, C5, C6 |
| 4 | 33pF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C7, C8, C9, C10 |
| 4 | 33k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4 |
| 9 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6, R7, R8, R9, R11, R12, R13 +1 |
| 2 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R15 |
| 1 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R16 |
OffsetAtten design files
The KiCad project lives in the QuinnFreedman/modular repository on GitHub; these links point at the commit this page was built from.
OffsetAtten: common questions
How big is the OffsetAtten PCB?
The OffsetAtten measures 19.1 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OffsetAtten?
45 components, from 17 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the OffsetAtten design files?
From the QuinnFreedman/modular repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the OffsetAtten design in my own project?
The repository has no license, so all rights stay with QuinnFreedman. Use it as a reference, and ask the author before reusing the design.
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