4 layers17.8 × 21 mm
Devboard
aethern1k4-stack/XIAO-recreation
A recreation of XIAO nrf 52840 board for educational purposes
71 parts
4 layers21 × 17.8 mm
Seeed Studio XIAO nRF52840 v1.1
maxotar/activity-tracker- Size
- 21 × 17.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 73
- Nets
- 85
- Pads
- 314
- Tracks, vias
- 789, 152
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Feb 2026
- Updated
- 2 Mar 2026
Overview
Seeed Studio XIAO nRF52840 v1.1 is an open-source printed circuit board by maxotar, from the maxotar/activity-tracker repository on GitHub, published under the MIT licence. It is a 4-layer board of 21 × 17.8 mm with 73 parts on 85 nets, routed with 789 tracks and 152 vias.
It is built around the NRF52840-QFAA-R, BQ25101YFPT and LSM6DS3TR-C, with the SGM2040-3.3YUDH4G/TR, LP0404N3T5G and MSM261D3526H1CPM among its other parts. Its parts include 27 capacitors, 18 resistors, 9 ICs, 2 crystals and 1 diode. It belongs with the nRF52 and nRF5x boards of this library.
Main components
7
NRF52840-QFAA-R
QFN-48(6x6)-95dBm 1.7V~5.5V 2.4GHz 2.4GHz~2.4835GHz 2Mbps 4.82mA 6.26mA 8dBm Bluetooth、802.15.4 SPI、USB、UART、ADC、I2S、PDM、PWM Supports RSSI function、CRC check function、DMA function QFN-48(6x6) RF Transceiver ICs ROHSNordic SemiconRF Transceiver ICs
BQ25101YFPT
DSBGA-60℃~+125℃ 1 3.5V~28V 4.2V DSBGA-6 Battery Management ROHSTexas InstrumentsBattery Management
LSM6DS3TR-C
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 16bit 3uA 4KB IMU (accelerometer + gyroscope) SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps 运动事件检测、同步与时间戳 LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
SGM2040-3.3YUDH4G/TR
UTDFN-4AL(1x1)-40℃~+85℃@(Ta) 1 1uA 250mA 3.3V 38dB@(217Hz) 7.5V 90mV@(100mA) Fixed Over Current Protection、Over Temperature Protection、Enable Positive UTDFN-4AL(1x1) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSG MicroVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LP0404N3T5G
SOT-883-31 P-Channel 1.2V 1.4A 152pF 18.5pF 2.2Ω@1.5V 2.8nC@4.5V 20V 6pF P-Channel SOT-883-3 MOSFETs ROHSLeshan Radio (LRC)MOSFETsMSM261D3526H1CPM
LGA-6LGA-6 New Arrivals ROHSMEMSUncategorised
SDM20U40-7-FS
SOD-523SOD-523 Schottky Diodes ROHSFUXINSEMISchottky Diodes
Parts
73| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 2.2uF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C3, C4, C6, C9, C22, C25, C29, C30, C39, C41, C42 |
| 5 | 100nF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C1, C5, C8, C24, C34 |
| 5 | 10k | Seeed Studio XIAO nRF52840 v1.1:R0201 | R4, R13, R14, R15, R20 |
| 4 | TEST-POINT'4545' | Seeed Studio XIAO nRF52840 v1.1:TP-D45MIL | TP1, TP2, TP3, TP5 |
| 3 | 2.2k | Seeed Studio XIAO nRF52840 v1.1:R0201 | R3, R5, R7 |
| 3 | TEST-POINT'4080' | Seeed Studio XIAO nRF52840 v1.1:TP-80X40MIL | BAT0, NFC1, NFC2 |
| 3 | ~ | Misc:LOGO_CC_BY-SA_4.0 | U5, U8, U9 |
| 2 | 10pF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C2, C7 |
| 2 | 15pF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C32, C33 |
| 2 | 2.7k | Seeed Studio XIAO nRF52840 v1.1:R0201 | R12, R18 |
| 2 | 33R | Seeed Studio XIAO nRF52840 v1.1:R0201 | R10, R11 |
| 2 | 5.1k | Seeed Studio XIAO nRF52840 v1.1:R0201 | R1, R2 |
| 1 | 0.5pF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C37 |
| 1 | 0.8pF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C36 |
| 1 | 100k | Seeed Studio XIAO nRF52840 v1.1:R0201 | R9 |
| 1 | 100pF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C35 |
| 1 | 10uH | Seeed Studio XIAO nRF52840 v1.1:L0603 | L3 |
| 1 | 1M_1% | Seeed Studio XIAO nRF52840 v1.1:R0201 | R16 |
| 1 | 1nF | Seeed Studio XIAO nRF52840 v1.1:C0402 | C10 |
| 1 | 32.768KHz | Seeed Studio XIAO nRF52840 v1.1:X2-SMD-L1.6X1.0X0.5MM | X1 |
| 1 | 32MHz | Seeed Studio XIAO nRF52840 v1.1:4P1612 | X2 |
| 1 | 4.7nH | Seeed Studio XIAO nRF52840 v1.1:L0201 | C38 |
| 1 | 510k_1% | Seeed Studio XIAO nRF52840 v1.1:R0201 | R17 |
| 1 | 820pF | Seeed Studio XIAO nRF52840 v1.1:C0201 | C31 |
| 1 | ANTENNA-AN3216 | Seeed Studio XIAO nRF52840 v1.1:ANT-SMD3P-3.2X1.6X1.04MM | ANT1 |
| 1 | BQ25101YFPT | Ic:DSBGA6-0.4-1.6x0.9x0.5mm | U2 |
| 1 | BUTTON-4P | Seeed Studio XIAO nRF52840 v1.1:SW4-SMD-2.8-2.6X1.6X0.53MM | K1 |
| 1 | DNP | Seeed Studio XIAO nRF52840 v1.1:USON2X3_8 | U7 |
| 1 | DNP | Seeed Studio XIAO nRF52840 v1.1:R0201 | R8 |
| 1 | DNP | Seeed Studio XIAO nRF52840 v1.1:C0201 | C40 |
| 1 | GND | Seeed Studio XIAO nRF52840 v1.1:TP-80X40MIL | GND0 |
| 1 | LP0404N3T5G | Seeed Studio XIAO nRF52840 v1.1:PMOS_1.0_0.6_0.35MM | Q1 |
| 1 | LSM6DS3TR-C | Seeed Studio XIAO nRF52840 v1.1:LGA14-0.5-2.5X3X0.86MM | U3 |
| 1 | MSM261D3526H1CPM | Seeed Studio XIAO nRF52840 v1.1:MIC6P-3.5X2.65X0.94MM | MIC1 |
| 1 | NRF52840_QF | Seeed Studio XIAO nRF52840 v1.1:AQFN50P700X700X85_HS-74N | U1 |
| 1 | RED | Seeed Studio XIAO nRF52840 v1.1:LED-0402 | CHG0 |
| 1 | RGB | Seeed Studio XIAO nRF52840 v1.1:4P1010 | RGB6 |
| 1 | SDM20U40-7 | Seeed Studio XIAO nRF52840 v1.1:SOD-523 | D1 |
| 1 | SGM2040-3.3YUDH4G/TR | Seeed Studio XIAO nRF52840 v1.1:X2SON-4 | U6 |
| 1 | USB2.0-TYPE-C | Seeed Studio XIAO nRF52840 v1.1:USB2.0-TYPE-C | USB1 |
| 1 | XIAO-nRF52840 | Seeed_Studio_XIAO_Series:XIAO-Add-On | U4 |
Questions
How big is the Seeed Studio XIAO nRF52840 v1.1 PCB?
It measures 21 × 17.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Seeed Studio XIAO nRF52840 v1.1 use?
73 parts, built around the NRF52840-QFAA-R, BQ25101YFPT, LSM6DS3TR-C and SGM2040-3.3YUDH4G/TR. 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 Seeed Studio XIAO nRF52840 v1.1 KiCad files?
From the maxotar/activity-tracker repository on GitHub, at the commit this page was made from: the board is docs/Seeed-Studio-XIAO-nRF52840_V1.1_SCH & PCB_251222_01/Seeed Studio XIAO nRF52840 v1.1.kicad_pcb and its schematic docs/Seeed-Studio-XIAO-nRF52840_V1.1_SCH & PCB_251222_01/01 Descriptions.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Seeed Studio XIAO nRF52840 v1.1 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 6 layers21 × 17.8 mm
- 2 layers21 × 17.8 mm
Seeed Studio XIAO nRF52840 v1.3
aram-ap/daredevil
Computer Vision-Based Tactile Feedback for the Visually Impaired
80 parts3MIT - 6 layers50 × 50 mm
- 4 layers128 × 79 mm
- 6 layers50 × 50 mm
- 6 layers64 × 58 mm
- 4 layers55 × 20 mm
Substrate PocketMusic3
SubstrateElectronics/SoundStick
An eraser sized music player/walkie-talkie supporting Bluetooth and SD card playback.
66 parts1CERN-OHL-W-2.0