4 layers21 × 17.8 mm
XIAO ESP32 C6
MitkoDyakov/Calipatron
I design my own digital caliper based on STM32F103C8T6 blue pill.
83 parts47MIT
6 layers17.8 × 21.1 mm
Xiaobao
samchin/cablecata serial cable for UART, I2C and SPI
- Size
- 17.8 × 21.1 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 77
- Pads
- 362
- Tracks, vias
- 592, 125
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Feb 2026
- Updated
- 1 Feb 2026
Overview
Xiaobao is an open-source printed circuit board by samchin, from the samchin/cablecat repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 6-layer board of 17.8 × 21.1 mm with 75 parts on 77 nets, routed with 592 tracks and 125 vias.
It is built around the SGM7222YWQ10/TR, SGM6029BYG/TR and SGM6029CYG/TR, with the TPS22916CYFPR, SGM40567-4.2XG/TR and CC0402MRX5R6BB106 among its other parts. Its parts include 23 capacitors, 16 resistors, 8 ICs, 8 diodes and 2 transistors. It belongs with the interfaces and adapters boards of this library.
Main components
12
SGM7222YWQ10/TR
QFN-10(1.4x1.8)-40℃~+85℃ 1.8V~4.3V 4.3V Enable/shutdown function、Overvoltage protection Rail-to-Rail Input, Rail-to-Rail Output QFN-10(1.4x1.8) Operational Amplifier ROHSSG MicroOperational Amplifier
SGM6029BYG/TR
WLCSP-6-B(0.7x1.1)-40℃~+85℃ 1 1.95V~5.5V 4MHz Buck Buck Yes WLCSP-6-B(0.7x1.1) DC-DC Converters ROHSSG MicroDC-DC ConvertersSGM6029CYG/TR
WLCSP-6-B(0.7x1.1)-40℃~+85℃ 1 1.8V~3.3V 1.95V~5.5V 1A 2.3uA 4MHz Adjustable Buck Buck Built-in Yes WLCSP-6-B(0.7x1.1) DC-DC Converters ROHSSG MicroDC-DC Converters
TPS22916CYFPR
DSBGA-4(0.7x0.7)-40℃~+85℃ 1 1V~5.5V 2A 60mΩ Active High Load Switch Output discharge function、Soft-start、Reverse current blocking DSBGA-4(0.7x0.7) Power Distribution Switches ROHSTexas InstrumentsPower Distribution Switches
SGM40567-4.2XG/TR
WLCSP-6-B(0.92x1.16)-40℃~+125℃ 1 2.7V~7.5V 4.2V 700mA WLCSP-6-B(0.92x1.16) Battery Management ROHSSG MicroBattery Management
CC0402MRX5R6BB106
040210V 10uF X5R ±20% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTB74121U0055M060
WL-CSP0201SLESD And Surge Protection (TVS/ESD)TDK
CC0201KRX5R6BB104
0201100nF 10V X5R ±10% 0201 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
TFM160808ALC-R47MTAA
06032.6A 2.7A 470nH 54mΩ Consumer grade Thin-Film Inductor ±20% 0603 Power Inductors ROHSTDKInductors (SMD)CC0201JRNPO9BN120
020112pF 50V NP0 ±5% 0201 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
SKTAAAE010
SMD,2.6x1.6mm-30℃~+85℃ 0.53mm 1.63N 1.6mm 12V 2.6mm 300,000 Cycles 50mA IP67 Round Button SMD(SMT) Tab SPST-NO Surface Mount,Vertical SMD,2.6x1.6mm Tactile Switches ROHSALPSALPINETactile SwitchesRC0201FR-07100RL
0201-55℃~+125℃ 100Ω 25V 50mW Thick Film Resistor ±1% ±200ppm/℃ 0201 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
README
README.mdcablecat
a serial cable for i2c, spi, and uart
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | TEST-POINT'4545' | xiao:TP-D45MIL | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 |
| 5 | 0.1uF, 10V, X5R | Capacitor_SMD:C_0201_0603Metric | C4, C7, C8, C13, C18 |
| 4 | 10uF | Capacitor_SMD:C_0402_1005Metric | C14, C17, C19, C21 |
| 4 | B74121U0055M060 | xiao:ESD-0201 | D5, D6, D7, D8 |
| 3 | 100nF | Capacitor_SMD:C_0201_0603Metric | C16, C20, C22 |
| 3 | 1uF | Capacitor_SMD:C_0201_0603Metric | C3, C6, C27 |
| 3 | 2.2uF, 6.3V, X5R | Capacitor_SMD:C_0201_0603Metric | C5, C9, C15 |
| 3 | 470K | Resistor_SMD:R_0201_0603Metric | R13, R14, R16 |
| 3 | 5.1k, 1% | Resistor_SMD:R_0201_0603Metric | R5, R8, R11 |
| 2 | 0.47uH | xiao:L0603 | L1, L3 |
| 2 | 1.0uF, 10V, X5R | Capacitor_SMD:C_0201_0603Metric | C2, C11 |
| 2 | 12pF C0G | Capacitor_SMD:C_0201_0603Metric | C1, C10 |
| 2 | SKTAAAE010 | xiao:SW4-SMD-2.8-2.6X1.6X0.53MM | SW1, SW2 |
| 2 | TPS22916CYFPR | xiao:WLCSP4-0.4-0.77X0.77X0.33MM | U2, U8 |
| 2 | Test Point | xiao:TP-80X40MIL | TP9, TP10 |
| 1 | 1.5k | Resistor_SMD:R_0201_0603Metric | R1 |
| 1 | 100 ohm | Resistor_SMD:R_0201_0603Metric | R2 |
| 1 | 100R | Resistor_SMD:R_0201_0603Metric | R20 |
| 1 | 10k, 1% | Resistor_SMD:R_0201_0603Metric | R4 |
| 1 | 12.1k | Resistor_SMD:R_0201_0603Metric | R6 |
| 1 | 150K | xiao:R0201 | R12 |
| 1 | 1nF | Capacitor_SMD:C_0201_0603Metric | C26 |
| 1 | 2.2K | Resistor_SMD:R_0201_0603Metric | R19 |
| 1 | 249K | Resistor_SMD:R_0201_0603Metric | R15 |
| 1 | 4.7M | Resistor_SMD:R_0201_0603Metric | R3 |
| 1 | 48.000MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y2 |
| 1 | 5.1K | Resistor_SMD:R_0201_0603Metric | R7 |
| 1 | LN237N3T5G | xiao:PMOS_1.0X0.6X0.35MM | Q2 |
| 1 | LNZ8F5V6T5G | xiao:DFN1006-2L | D3 |
| 1 | LOGO | xiao:simplebaologo | G*** |
| 1 | LOGO | Logo:LOGO-SEEED-NEW-1X9.6MM | G*** |
| 1 | LP0404N3T5G | xiao:PMOS_1.0X0.6X0.35MM | Q1 |
| 1 | PSBD2FD40V1H | xiao:DFN1006-2L | D2 |
| 1 | SGM40567-4.2XG/TR | xiao:WLCSP-0.4-0.92X1.16X0.4MM | U7 |
| 1 | SGM7222YWQ10/TR | common:QFN-10_1.4x1.8_Pitch0.4mm | U5 |
| 1 | SMD IC PMIC;DCDC Buck-ADJ-1A,Vin 1.95V to 5.5V,Vout 0.8V to 1.55V;WLCSP-6B | xiao:BGA6-0.35-0.745X10.95X0.4MM | U3 |
| 1 | SMD IC PMIC;DCDC Buck-ADJ-1A,Vin 1.95V to 5.5V,Vout 1.8V to 3.3V;WLCSP-6B | xiao:BGA6-0.35-0.745X10.95X0.4MM | U9 |
| 1 | USB_C_Receptacle_USB2.0_16P | common:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | WS2812B-1010 | xiao:1010 RGB WS2812B | D1 |
| 1 | XIAO-HALF-HOLE-23P | xiao:MOUDLE23P-XIAO-HALF-HOLE | U4 |
| 1 | Yellow | xiao:LED-0402 | D4 |
| 1 | baochip1x | common:WLCSP-71_9x8_4.062x3.762mm | U1 |
Questions
How big is the Xiaobao PCB?
It measures 17.8 × 21.1 mm and has 6 copper layers, 1.6 mm thick.
What parts does the Xiaobao use?
75 parts, built around the SGM7222YWQ10/TR, SGM6029BYG/TR, SGM6029CYG/TR and TPS22916CYFPR. 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 Xiaobao KiCad files?
From the samchin/cablecat repository on GitHub, at the commit this page was made from: the board is xiaobao.kicad_pcb and its schematic xiaobao.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Xiaobao design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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