2 layers167.1 × 363.5 mm
2 layers71.9 × 168.7 mm
Attenuverter
gridbugs/modular2- Size
- 71.9 × 168.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 89
- Nets
- 59
- Pads
- 240
- Tracks, vias
- 538, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Nov 2025
- Updated
- 7 Nov 2026
Overview
Attenuverter is an open-source printed circuit board by gridbugs, from the gridbugs/modular2 repository on GitHub, published under the MIT licence. It is a 2-layer board of 71.9 × 168.7 mm with 89 parts on 59 nets, routed with 538 tracks and 0 vias.
Its parts include 40 resistors, 19 connectors, 8 diodes, 6 capacitors and 4 fuses.
README
low-pass-filter/README.mdLow-pass Filter
Quirks
V1
- The "Cutoff" potentiometer is reversed.
Parts
89| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R5, R7, R8, R13, R14, R15, R20, R21, R22, R27, R28, R29, R33, R36, R39 |
| 16 | 51K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3, R4, R6, R9, R10, R11, R12, R16, R17, R18, R19, R23, R24, R25, R26 |
| 8 | 100K | modular2:pot-socket | RV1, RV2, RV3, RV4, RV5, RV6, RV7, RV8 |
| 8 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R30, R31, R32, R34, R35, R37, R38, R40 |
| 8 | Conn_01x03_Socket | modular2:pot | J5, J6, J9, J10, J13, J14, J17, J18 |
| 6 | 100nf | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2, C3, C4, C5, C6 |
| 4 | Input 1 | modular2:banana-jack | J4, J8, J12, J16 |
| 4 | LED (Blue) | LED_THT:LED_D5.0mm | D2, D4, D6, D8 |
| 4 | LED (Red) | LED_THT:LED_D5.0mm | D1, D3, D5, D7 |
| 4 | Output 1 | modular2:banana-jack | J7, J11, J15, J19 |
| 4 | foot | modular2:foot | F1, F2, F3, R4 |
| 3 | Power | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J1, J2, J3 |
| 3 | TL074 | Package_DIP:DIP-14_W7.62mm_Socket | U1, U2, U3 |
| 1 | LOGO | modular2:ibis-small | G*** |
Questions
How big is the Attenuverter PCB?
It measures 71.9 × 168.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Attenuverter use?
89 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 gridbugs/modular2 repository on GitHub, at the commit this page was made from: the board is attenuverter/attenuverter.kicad_pcb and its schematic arduino-delay/arduino-delay.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Attenuverter 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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