HardLabs

Xiao corne

Nianzu·xiao_corne·xiao_corne/xiao_corne.kicad_pcb

Xiao corne PCB layout, top view — open source ESP32 board by Nianzu

About the Xiao corne PCB

Xiao corne is an open source ESP32 PCB design by Nianzu, published on GitHub. It is a 2-layer board measuring 141 × 88.1 mm, with 73 components from 22 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the SN74AHCT125DR, BQ24232RGTR and MPM3810GQB-33-Z. By type, the board carries 23 switches, 23 diodes, 10 capacitors, 10 resistors, 4 ICs and 2 connectors.

From the project

https://docs.espressif.com/projects/rust/book/getting-started/toolchain.html # Toolchain

Main components on the Xiao corne

SN74AHCT125DRESP32-S3-WROOM-1BQ24232RGTRMPM3810GQB-33-Z

Xiao corne bill of materials (BOM)

73 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SN74AHCT125DR
U1
1
ESP32-S3-WROOM-1
U2
1
BQ24232RGTR
U4
1
MPM3810GQB-33-Z
U5
1
USB4110GFA
J1
1
CONN_01X04_SOCKET
Conn_01x04_Socket
J6
1
Battery
BT1
1
SLW-864574-5A-RA-N-D
S1
21
SW_Push
SW1, SW2, SW3, SW4, SW5, SW11, SW12, SW13 +13
1
SW_Push
SW6
2
ESD321DPYR
D1, D2
21
LED_SK6812MINI
D16, D17, D18, D19, D20, D21, D22, D23 +13
2
10UF
10uF
C1, C2
1
1u
C3
1
22U
22u
C4
1
0.1U
0.1u
C7
2
100NF
100nF
C8, C9
3
4.7U
4.7u
C14, C15, C16
2
100K
100k
R1, R3
2
22
R2, R4
Show 2 more
QtyPartRefs
2
5.1K
5.1k
R5, R6
4
10K
10k
R7, R8, R9, R10

Xiao corne design files

The KiCad project lives in the Nianzu/xiao_corne repository on GitHub; these links point at the commit this page was built from.

Xiao corne: common questions

What microcontroller does the Xiao corne use?

The Xiao corne is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Xiao corne PCB?

The Xiao corne measures 141 × 88.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Xiao corne?

73 components, from 22 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Xiao corne design files?

From the Nianzu/xiao_corne repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Xiao corne design in my own project?

The repository has no license, so all rights stay with Nianzu. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Xiao corne 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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