XIAO MAINBOARD
About the XIAO MAINBOARD PCB
XIAO MAINBOARD is an open source ESP32 PCB design by NB6RULES, published on GitHub. It is a 2-layer board measuring 78 × 46 mm, with 13 components from 9 distinct parts.
Its main chip is the Module_XIAO-ESP32S3, from the ESP32 family. By type, the board carries 4 resistors, 3 connectors, 2 transistors, 1 IC, 1 module and 1 diode.
XIAO MAINBOARD bill of materials (BOM)
13 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ~ | Mini560_DCDC_Buck_module | U1 |
| 1 | Module_XIAO-ESP32S3 | SeeedStudio_XIAO_ESP32S3 | M1 |
| 2 | BSS138 | SOT-23 | Q1, Q2 |
| 1 | PinHeader_02x05_P2.54mm_Vertical_SMD | PinHeader_02x05_P2.54mm_Vertical_SMD | J1 |
| 1 | Screw_Terminal_01x02_P5mm | TerminalBlock_OnShore_1x02_P5.00mm_Horizontal | J2 |
| 1 | PinHeader_02x04_P2.54mm_Vertical_SMD | PinHeader_02x04_P2.54mm_Vertical_SMD | J3 |
| 1 | Diode_Schottky_MiniSMA | Diode_Schottky_MiniSMA | D4 |
| 1 | CP_Elec_100uF | CP_Elec_100uF_Panasonic_EEE-FN1E101UL | C1 |
| 4 | 10K | R_1206 | R7, R8, R9, R10 |
XIAO MAINBOARD design files
The KiCad project lives in the NB6RULES/Nadec-Biju-Fabacademy-Files repository on GitHub; these links point at the commit this page was built from.
XIAO MAINBOARD: common questions
What microcontroller does the XIAO MAINBOARD use?
The XIAO MAINBOARD is built around the Module_XIAO-ESP32S3, from the ESP32 family.
How big is the XIAO MAINBOARD PCB?
The XIAO MAINBOARD measures 78 × 46 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the XIAO MAINBOARD?
13 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the XIAO MAINBOARD design files?
From the NB6RULES/Nadec-Biju-Fabacademy-Files repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the XIAO MAINBOARD design in my own project?
The repository has no license, so all rights stay with NB6RULES. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the XIAO MAINBOARD without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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