2 layers191 × 85 mm
Sub panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
135 parts3kApache-2.0
2 layers17.8 × 31.8 mm
XIAO REV
gargum/Xiao-Pro9A Xiao to Pro Micro conversion board
- Size
- 17.8 × 31.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 135
- Nets
- 46
- Pads
- 135
- Tracks, vias
- 703, 74
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 Jun 2024
- Updated
- 28 Jun 2024
Overview
XIAO REV is an open-source printed circuit board by gargum, from the gargum/Xiao-Pro repository on GitHub. It is a 2-layer board of 17.8 × 31.8 mm with 135 parts on 46 nets, routed with 703 tracks and 74 vias.
README
README.mdXiao-Pro
A Xiao to Pro Micro conversion board
Features
- Solder jumpers allow this board to be reversible
- Compatible with several versions of the Xiao microcontroller
- Reset pins connected to a reset button
- Broken out battery contacts
- Broken out NFC contacts
- Switch (SPDT) connecting the batteries to the Xiao's on-board battery charger
- Broken out contacts one can use to wire the output of a TP4056 instead of using the on-board battery charger
- All 6 SWD pins broken out
Pinout Conversion
| Xiao | Pro Micro | | A0 | P21 | | A1 | P20 | | A2 | P19 | | A3 | P18 | | A4 | SDA | | A5 | SCL | | A6 | TX | | A7 | RX | | A8 | P6 | | A9 | P5 | | A10 | P4 | | GND | GND | | 3V3 | VCC | | 5V | RAW |
Notes
- Only 2 of 3 GND pins are connected, hence why there are solder jumpers to bridge these pins.
- Although SPI technically is connected, it occupies P4, P5, and P6 just below the I2C pins.
- A TP4056 is bigger than this board, and therefore cannot be used as a shield for it.
- All SMD pads are slightly undersized. Doing this was necessary in order to connect everything.
- This board is too small to be ordered individually, and instead must be ordered as a sheet.
How to Build/Buy
In this repository, there should be a ZIP file. This contains all of the gerber files necessary to order this PCB through PCBWay or JLCPCB. If one wishes to see what exactly is inside that ZIP file, a folder with all of its contents is also contained in this repository. If one wishes to modify this project, all Kicad project files are included in this repository.
Parts
135| Qty | Value | Footprint | References |
|---|---|---|---|
| 135 | , , , , , , , , , , , , , , , +119 |
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Questions
How big is the XIAO REV PCB?
It measures 17.8 × 31.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the XIAO REV use?
135 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 XIAO REV KiCad files?
From the gargum/Xiao-Pro repository on GitHub, at the commit this page was made from: the board is Kicad Project Files/XIAO_REV.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the XIAO REV design in my own project?
Its repository states no licence, so its author keeps all rights: ask gargum before reusing the design.