2 layers127 × 14 mm
Train set building light
dwilliams/pcb-things
A place to keep all of the PCB things that don't fit in a project
54 partsBSD-2-Clause
2 layers99.1 × 90 mm
Seq one control board
dwilliams/pcb-thingsA place to keep all of the PCB things that don't fit in a project
- Size
- 99.1 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 48
- Pads
- 188
- Tracks, vias
- 298, 20
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 9 Oct 2019
- Updated
- 20 Oct 2026
Overview
Seq one control board is an open-source printed circuit board by dwilliams, from the dwilliams/pcb-things repository on GitHub, published under the BSD-2-Clause licence. It is a 2-layer board of 99.1 × 90 mm with 46 parts on 48 nets, routed with 298 tracks and 20 vias.
Its parts include 12 resistors, 11 connectors, 10 capacitors, 7 diodes and 6 ICs.
README
README.mdpcb-things
A place to keep all of the PCB things that don't fit in a project
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100nF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C1, C2, C5, C6, C7, C8, C9, C10 |
| 6 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6 |
| 5 | 100K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R6, R7, R8, R9 |
| 5 | 4023 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U2, U3, U4, U5, U6 |
| 3 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R4, R5 |
| 3 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2, R10, R11 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C3, C4 |
| 1 | 40106 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U1 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R12 |
| 1 | LED | LED_THT:LED_D5.0mm | D7 |
| 1 | Loop Switch | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J7 |
| 1 | OneTwo Switch | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J8 |
| 1 | Power | Connector_Molex:Molex_KK-396_5273-04A_1x04_P3.96mm_Vertical | J11 |
| 1 | Power to Steps | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J9 |
| 1 | Reset Button | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Reset Jack | Connector_Audio:Jack_6.35mm_Neutrik_NRJ6HM-1-PRE_Horizontal | J6 |
| 1 | Signals | Connector_PinHeader_2.54mm:PinHeader_1x11_P2.54mm_Vertical | J10 |
| 1 | Start Button | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | Start Jack | Connector_Audio:Jack_6.35mm_Neutrik_NRJ6HM-1-PRE_Horizontal | J4 |
| 1 | Step Button | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Step Jack | Connector_Audio:Jack_6.35mm_Neutrik_NRJ6HM-1-PRE_Horizontal | J2 |
Questions
How big is the Seq one control board PCB?
It measures 99.1 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Seq one control board use?
46 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 Seq one control board KiCad files?
From the dwilliams/pcb-things repository on GitHub, at the commit this page was made from: the board is tmp-seq-one/seq-one-control-board/seq-one-control-board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Seq one control board design in my own project?
Its repository publishes it under the BSD-2-Clause 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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