2 layers216.9 × 86.8 mm
Sweepbling lp pcb
davidphilipbarr/Sweep
Sweep - a small promicro based keyboard inspired by the Ferris.
59 parts2.1k
2 layers27.1 × 27.1 mm
Sample196 bare
DingoOz/TraceMaker197HardwarePlaygroundE3Pcbrev0.3 with every footprint except U7 (an EasyEDA MP1584 module) and its GND pours removed. Net +VB is the two pads U7.2.
- Size
- 27.1 × 27.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 59
- Nets
- 53
- Pads
- 212
- Tracks, vias
- 640, 179
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 5 Oct 2026
- Updated
- 3 Nov 2026
Overview
Sample196 bare is an open-source printed circuit board by DingoOz, from the DingoOz/TraceMaker repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 27.1 × 27.1 mm with 59 parts on 53 nets, routed with 640 tracks and 179 vias.
Its parts include 5 capacitors and 5 resistors.
README
reports/realworld/repro/README.mdReproductions of router limits found in the real-world study
e3-u7-boxed-in.kicad_pcb (explained 17:05: net-less copper graphics)
Hardware_Playground_E3_Pcb_rev0.3 with every footprint except U7 (an EasyEDA MP1584 module) and its GND pours removed. Net +VB is the two pads U7.2.
tracemaker route e3-u7-boxed-in.kicad_pcb -o out.kicad_pcb --only-net +VB --work 300000 --threads 1 --no-gpu --no-kb
-> routed 0/1 (U7.2 -> U7.2 boxed in)
tracemaker route ... --soft-copper-graphics
-> routed 1/1Cause: the board file draws net-less copper polygons (gr_poly on F.Cu and B.Cu) over the pad area; the router treats board copper graphics as fixed copper that nothing may touch. --soft-copper-graphics (doc 05 §48, D127) ignores them.
(Moving the module away from the polygons also made it route, which was the clue.)
Parts
59| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | SRJ | SRJ:TP117 | TP117 |
| 1 | SRJ | SRJ:TP045 | TP045 |
| 1 | SRJ | SRJ:C002 | C002 |
| 1 | SRJ | SRJ:TP073 | TP073 |
| 1 | SRJ | SRJ:TP108 | TP108 |
| 1 | SRJ | SRJ:bga_component | bga_component |
| 1 | SRJ | SRJ:TP084 | TP084 |
| 1 | SRJ | SRJ:R007 | R007 |
| 1 | SRJ | SRJ:R001 | R001 |
| 1 | SRJ | SRJ:R003 | R003 |
| 1 | SRJ | SRJ:TP130 | TP130 |
| 1 | SRJ | SRJ:TP078 | TP078 |
| 1 | SRJ | SRJ:TP137 | TP137 |
| 1 | SRJ | SRJ:TP121 | TP121 |
| 1 | SRJ | SRJ:TP057 | TP057 |
| 1 | SRJ | SRJ:TP022 | TP022 |
| 1 | SRJ | SRJ:TP113 | TP113 |
| 1 | SRJ | SRJ:C004 | C004 |
| 1 | SRJ | SRJ:C006 | C006 |
| 1 | SRJ | SRJ:TP098 | TP098 |
| 1 | SRJ | SRJ:TP080 | TP080 |
| 1 | SRJ | SRJ:TP142 | TP142 |
| 1 | SRJ | SRJ:TP141 | TP141 |
| 1 | SRJ | SRJ:TP111 | TP111 |
| 1 | SRJ | SRJ:TP105 | TP105 |
| 1 | SRJ | SRJ:TP020 | TP020 |
| 1 | SRJ | SRJ:TP061 | TP061 |
| 1 | SRJ | SRJ:TP063 | TP063 |
| 1 | SRJ | SRJ:TP094 | TP094 |
| 1 | SRJ | SRJ:TP071 | TP071 |
| 1 | SRJ | SRJ:C010 | C010 |
| 1 | SRJ | SRJ:TP072 | TP072 |
| 1 | SRJ | SRJ:TP099 | TP099 |
| 1 | SRJ | SRJ:TP005 | TP005 |
| 1 | SRJ | SRJ:TP135 | TP135 |
| 1 | SRJ | SRJ:TP050 | TP050 |
| 1 | SRJ | SRJ:TP112 | TP112 |
| 1 | SRJ | SRJ:TP042 | TP042 |
| 1 | SRJ | SRJ:TP076 | TP076 |
| 1 | SRJ | SRJ:TP110 | TP110 |
| 1 | SRJ | SRJ:TP083 | TP083 |
| 1 | SRJ | SRJ:TP092 | TP092 |
| 1 | SRJ | SRJ:TP127 | TP127 |
| 1 | SRJ | SRJ:TP097 | TP097 |
| 1 | SRJ | SRJ:TP012 | TP012 |
| 1 | SRJ | SRJ:TP089 | TP089 |
| 1 | SRJ | SRJ:TP124 | TP124 |
| 1 | SRJ | SRJ:TP129 | TP129 |
| 1 | SRJ | SRJ:TP102 | TP102 |
| 1 | SRJ | SRJ:TP134 | TP134 |
| 1 | SRJ | SRJ:TP106 | TP106 |
| 1 | SRJ | SRJ:R005 | R005 |
| 1 | SRJ | SRJ:TP128 | TP128 |
| 1 | SRJ | SRJ:R009 | R009 |
| 1 | SRJ | SRJ:TP101 | TP101 |
| 1 | SRJ | SRJ:TP024 | TP024 |
| 1 | SRJ | SRJ:TP090 | TP090 |
| 1 | SRJ | SRJ:TP075 | TP075 |
| 1 | SRJ | SRJ:C008 | C008 |
Questions
How big is the Sample196 bare PCB?
It measures 27.1 × 27.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sample196 bare use?
59 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 Sample196 bare KiCad files?
From the DingoOz/TraceMaker repository on GitHub, at the commit this page was made from: the board is report/captures/sample196_bare.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sample196 bare design in my own project?
Its repository publishes it under the GPL-3.0 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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