2 layers159.5 × 30 mm
Type f
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
25 parts3kApache-2.0
2 layers101 × 66 mm
DiffSigIso
empcllc/diffSigIso- Size
- 101 × 66 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 17
- Pads
- 55
- Tracks, vias
- 83, 4
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 8 Sep 2026
- Updated
- 10 Sep 2026
Overview
DiffSigIso is an open-source printed circuit board by empcllc, from the empcllc/diffSigIso repository on GitHub. It is a 2-layer board of 101 × 66 mm with 25 parts on 17 nets, routed with 83 tracks and 4 vias.
It is built around the ISO122U/1K. Its parts include 4 capacitors, 4 diodes, 3 ICs and 3 connectors.
Main components
1Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | DAQ-VEE | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | c-Sen_REF1, c-Sen_V_{CC}1, c-Sen_V_{EE}1, c-Sen_V1, DAQ-Side_V_{in}1, DAQ-Side_V_{out}1 |
| 4 | C_Polarized | Capacitor_THT:CP_Axial_L10.0mm_D4.5mm_P15.00mm_Horizontal | C3, C4, C5, C6 |
| 4 | D_TVS | Diode_THT:D_DO-15_P10.16mm_Horizontal | D3, D4, D5, D6 |
| 2 | Conn_01x02 (Molex_SL_171971-0002) | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J4, J5 |
| 2 | TIM 2-0923 | diffIsoLibrary:TIM 2 DUAL_TRP | U3, U4 |
| 1 | Conn_01x02_Pin | Connector_Phoenix_MSTB:PhoenixContact_MSTBVA_2,5_2-G-5,08_1x02_P5.08mm_Vertical | J1 |
| 1 | DAQ-SIDE_VCC | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP16 |
| 1 | DAQ_SIDE-VEE | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP15 |
| 1 | ISO122U/1K | TI-isolators:DVA8 | U2 |
| 1 | REMOTE-U3 | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP2 |
| 1 | REMOTE-U4 | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP1 |
| 1 | TestPoint | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP14 |
Questions
How big is the DiffSigIso PCB?
It measures 101 × 66 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DiffSigIso use?
25 parts, built around the ISO122U/1K. 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 DiffSigIso KiCad files?
From the empcllc/diffSigIso repository on GitHub, at the commit this page was made from: the board is diffSIgIso/diffSIgIso.kicad_pcb and its schematic diffSIgIso/diffSIgIso.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DiffSigIso design in my own project?
Its repository states no licence, so its author keeps all rights: ask empcllc before reusing the design.
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