

Tuxtag pcb
- Size
- 25.8 × 37.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 9
- Pads
- 41
- Tracks, vias
- 92, 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Feb 2026
- Updated
- 2 Apr 2026
Overview
Tuxtag pcb is an open-source printed circuit board by TuxElectronics, from the TuxElectronics/tuxtag-hardware repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 25.8 × 37.2 mm with 13 parts on 9 nets, routed with 92 tracks and 6 vias.
It is built around the OVLAW4CB7. Its parts include 4 resistors, 4 diodes, 3 connectors, 1 IC and 1 transistor. It belongs with the ESP32 and RISC-V boards of this library.
Main components
1README
README.mdTuxTag Hardware
Open source BLE tracker electronics.
Status
Design phase completed. Still undergoing testing.
Contents
schematic/— Circuit diagramspcb/— Board layout and Gerbersbom/— Bill of materials
Photo
License
CERN Open Hardware Licence Version 2 - Strongly Reciprocal (CERN-OHL-S)
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2, R3, R4 |
| 3 | OVLAW4CB7 | OVLAW4CB7:LEDRD254W50D305H520P | D2, D3, D4 |
| 1 | 1N4148 | 1N4148:DO35-7 | D1 |
| 1 | ESP32-C3_SUPERMINI_TH | ESP32-C3_SUPERMINI_TH:MODULE_ESP32-C3_SUPERMINI_TH | U1 |
| 1 | P2N2222A | P2N2222A:TO92 | Q1 |
| 1 | battery | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J2 |
| 1 | buzzer | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | vibrator | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
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Questions
How big is the Tuxtag pcb PCB?
It measures 25.8 × 37.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tuxtag pcb use?
13 parts, built around the OVLAW4CB7. 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 Tuxtag pcb KiCad files?
From the TuxElectronics/tuxtag-hardware repository on GitHub, at the commit this page was made from: the board is pcb/tuxtag-pcb.kicad_pcb and its schematic schematic/tuxtag-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tuxtag pcb design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).