2 layers167.1 × 363.5 mm
2 layers76 × 150.1 mm
Pattern sequencer
gridbugs/modular2- Size
- 76 × 150.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 65
- Pads
- 188
- Tracks, vias
- 369, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Nov 2025
- Updated
- 7 Nov 2026
Overview
Pattern sequencer 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 76 × 150.1 mm with 70 parts on 65 nets, routed with 369 tracks and 0 vias.
Its parts include 28 resistors, 13 connectors, 12 diodes, 7 switches and 4 fuses. It belongs with the AVR (ATmega, ATtiny) boards of this library.
README
low-pass-filter/README.mdLow-pass Filter
Quirks
V1
- The "Cutoff" potentiometer is reversed.
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +12 |
| 12 | LED (Red) | LED_THT:LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 4 | foot | modular2:foot | F1, F2, F3, F4 |
| 3 | Out 1 | modular2:banana-jack | J8, J9, J10 |
| 3 | Power | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J1, J2, J6 |
| 2 | 100nf | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C2, C3 |
| 2 | Conn_01x03_Socket | modular2:pot | J3, J4 |
| 2 | Out 2 | modular2:banana-jack | J7, J11 |
| 2 | Out 3 | modular2:banana-jack | J5, J12 |
| 1 | 100K - Num Steps | modular2:pot-socket | RV2 |
| 1 | 100K - Tempo | modular2:pot-socket | RV1 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | Clock Divider Base Division | modular2:switch2 | SW4 |
| 1 | External Clock | modular2:banana-jack | J13 |
| 1 | External Clock Select | modular2:switch1 | SW5 |
| 1 | IN 1 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1 |
| 1 | IN 2 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW2 |
| 1 | IN 3 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW3 |
| 1 | LOGO | modular2:ibis-small | G*** |
| 1 | Mode Select | modular2:switch1 | SW7 |
| 1 | SHIFT | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW6 |
Questions
How big is the Pattern sequencer PCB?
It measures 76 × 150.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pattern sequencer use?
70 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 Pattern sequencer KiCad files?
From the gridbugs/modular2 repository on GitHub, at the commit this page was made from: the board is pattern-sequencer/pattern-sequencer.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 Pattern sequencer 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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