2 layers140.5 × 30 mm
Type e
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
16 parts3kApache-2.0
2 layers22 × 22 mm
Updi
stathopulos/updiUPDI and UART Serial Programmer
- Size
- 22 × 22 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 19
- Pads
- 64
- Tracks, vias
- 112, 5
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 16 Jun 2026
- Updated
- 9 Jul 2026
Overview
Updi is an open-source printed circuit board by stathopulos, from the stathopulos/updi repository on GitHub. It is a 2-layer board of 22 × 22 mm with 16 parts on 19 nets, routed with 112 tracks and 5 vias.
Its parts include 6 capacitors, 4 resistors, 2 ICs, 1 diode and 1 connector. It belongs with the interfaces and adapters boards of this library.
README
README.mdUPDI and UART Serial Programmer
A low cost USB programmer for interfacing with both UPDI and UART from the same board
Unlike other UPDI programmers, this board allows access to both UART and UPDI without having to change the wiring between your programmer and MCU, making it easy to go from programming to reading debug data over serial.
This design makes heavy use of the JLC basic parts library to keep BOM costs down. At volumes as low as 25 units this board can be completed, assembled, and shipped for under $3 per board.
| Front | Back |
|---|---|
 |  |
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C6 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 330R | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | Conn_01x05 | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J1 |
| 1 | SW_DPDT | EasyEDA_Lib:SW-SMD_MST22D18G2 | SW2 |
| 1 | ~ | EasyEDA_Lib:SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | U2 |
| 1 | ~ | EasyEDA_Lib:MSOP-10_L3.0-W3.0-P0.50-LS5.0-BL | U1 |
| 1 | ~ | EasyEDA_Lib:LED0805-RD | LED1 |
| 1 | ~ | USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | USB1 |
Questions
How big is the Updi PCB?
It measures 22 × 22 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Updi use?
16 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 Updi KiCad files?
From the stathopulos/updi repository on GitHub, at the commit this page was made from: the board is pcb/updi.kicad_pcb and its schematic pcb/updi.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Updi design in my own project?
Its repository states no licence, so its author keeps all rights: ask stathopulos before reusing the design.
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