4 layers182.5 × 62 mm
4 layers
TouchSensor
nseuf/NixieTubeClock3A GPS-powered precision desk clock that uses nixie tubes
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 7
- Pads
- 28
- Tracks, vias
- 65, 11
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 10 Aug 2025
- Updated
- 12 Apr 2026
Overview
TouchSensor is an open-source printed circuit board by nseuf, from the nseuf/NixieTubeClock repository on GitHub. It is a 4-layer board with 13 parts on 7 nets, routed with 65 tracks and 11 vias.
It is built around the TTP223-TD and BSS127S. Its parts include 2 transistors, 1 capacitor, 1 resistor, 1 IC and 1 diode. It belongs with the lEDs and displays boards of this library.
Main components
2README
README.mdNixieTubeClock
NixieTubeClock is a GPS-based desk clock that is precise up to 10ms, and uses nixie tubes to display the time.
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | TestPoint | TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm | TP1, TP2, TP3 |
| 2 | BSS127S | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | MountingHole | MountingHole:MountingHole_2.2mm_M2_ISO7380 | H1, H2 |
| 1 | 100n | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | Conn_01x02_Socket | Connector_JST:JST_SUR_BM02B-SURS-TF_1x02-1MP_P0.80mm_Vertical | J1 |
| 1 | LED | Diode_SMD:D_0603_1608Metric | D1 |
| 1 | TTP223 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | ~ | TouchSensor:TouchPad | T1 |
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Questions
What parts does the TouchSensor use?
13 parts, built around the TTP223-TD and BSS127S. 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 TouchSensor KiCad files?
From the nseuf/NixieTubeClock repository on GitHub, at the commit this page was made from: the board is electronics/touch_sensor/TouchSensor.kicad_pcb and its schematic electronics/USBC_passthrough/USBCPassthrough.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TouchSensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask nseuf before reusing the design.