4 layers32.8 × 15 mm
2 layers21.1 × 17.8 mm
XIAO-7SEG
cHemingway/XIAO-7SEG7 Segment display for Xiao / QtPy
- Size
- 21.1 × 17.8 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 17
- Nets
- 25
- Pads
- 66
- Tracks, vias
- 144, 37
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Aug 2025
- Updated
- 30 Aug 2025
Overview
XIAO-7SEG is an open-source printed circuit board by cHemingway, from the cHemingway/XIAO-7SEG repository on GitHub. It is a 2-layer board of 21.1 × 17.8 mm with 17 parts on 25 nets, routed with 144 tracks and 37 vias.
It is built around the GS2816CW-G and AO3400A. Its parts include 11 resistors, 2 ICs, 2 transistors and 2 connectors. It belongs with the lEDs and displays boards of this library.
Main components
2README
README.mdXiao 7 Seg
7 Seg display shield for SeeedStudio Xiao / Adafruit QtPy
Uses Guangcai Display's tiny SMT displays, in white but you can get other colors, see LCSC
Mainly as a trial of JLCPCB assembly workflow
Todo
- Order and bringup
- Make a circuitpython library or something
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 33 | Resistor_SMD:R_0402_1005Metric | R3, R4, R5, R6, R7, R8, R9, R10, R11 |
| 2 | 10K | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | Conn_01x07 | XIAO RP2040 HAT:Xiao-Hat-Pins | J2, J4 |
| 2 | GS2816CW-G | XIAO RP2040 HAT:GS2816ACX-X_Short | U1, U2 |
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Questions
How big is the XIAO-7SEG PCB?
It measures 21.1 × 17.8 mm and has 2 copper layers, 0.8 mm thick.
What parts does the XIAO-7SEG use?
17 parts, built around the GS2816CW-G and AO3400A. 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-7SEG KiCad files?
From the cHemingway/XIAO-7SEG repository on GitHub, at the commit this page was made from: the board is XIAO 7SEG.kicad_pcb and its schematic XIAO 7SEG.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the XIAO-7SEG design in my own project?
Its repository states no licence, so its author keeps all rights: ask cHemingway before reusing the design.