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Seeed Studio XIAO nRF52840 v1.3

Josephrp·meshtonic·pcb/libs/Seeed Studio XIAO nRF52840 v1.3/Seeed Studio XIAO nRF52840 v1.3.kicad_pcb

Seeed Studio XIAO nRF52840 v1.3 PCB layout, top view — open source Nordic nRF board by Josephrp

About the Seeed Studio XIAO nRF52840 v1.3 PCB

Seeed Studio XIAO nRF52840 v1.3 is an open source Nordic nRF PCB design by Josephrp, published on GitHub under the Custom license license. It is a 2-layer board measuring 21 × 17.8 mm, with 79 components from 48 distinct parts.

Its main chip is the PMOS_1.00.6*0.35MM, from the Nordic nRF family. Other key parts include the BQ25100, LSM6DS3TR-C and 3.3V. By type, the board carries 28 capacitors, 17 resistors, 5 ICs, 4 test points, 2 crystals and 2 connectors.

It belongs with the rf & radio, power & battery and sensors designs in this gallery.

From the project

Meshtonic H4M Companion — ESP32-S3 carrier for PortaPack H4M / Mayhem with multi-slot LoRa and standalone Meshtastic

Meshtonic H4M Companion v2 is a custom carrier board and firmware stack for a Seeed XIAO ESP32-S3 Plus that docks to a HackRF + PortaPack H4M (Mayhem) and can also run as a standalone Meshtastic mesh node.

Repository: github.com/Josephrp/meshtonic (formerly Meteor-On-Mesh)

The two ESP32 firmwares are mutually exclusive — flash one or the other depending on whether you are using the board docked or as a mesh node.

Seeed Studio XIAO nRF52840 v1.3, from the project README
From the project README

Main components on the Seeed Studio XIAO nRF52840 v1.3

BQ25100LSM6DS3TR-C3.3V

Seeed Studio XIAO nRF52840 v1.3 bill of materials (BOM)

79 components, 48 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
—
U1
1
BQ25100
U2
1
LSM6DS3TR-C
U3
1
3.3V
U6
1
DNP
U7
1
PMOS_1.00.6*0.35MM
Q1
1
32.768KHz
X1
1
32MHz
X2
2
DNP
J1, J2
1
—
ANT1
3
—
BAT0, NFC1, NFC2
1
GND
GND0
1
—
K1
1
MSM261D3526H1CPM
MIC1
1
RGB
RGB6
4
—
TP1, TP2, TP3, TP5
1
—
UNK_HOLE_0
1
—
UNK_HOLE_1
1
—
UNK_HOLE_2
1
—
UNK_HOLE_3
Show 28 more
QtyPartRefs
1
—
UNK_HOLE_4
1
—
UNK_HOLE_5
1
—
UNK_HOLE_6
1
—
UNK_HOLE_7
1
—
USB1
1
RED
CHG0
1
—
D1
1
10uH
L3
5
100nF
C1, C5, C8, C24, C34
2
10pF
C2, C7
11
2.2uF
C3, C4, C6, C9, C22, C25, C29, C30 +3
1
1nF
C10
1
1pF
C11
1
820pF
C31
2
15pF
C32, C33
1
100pF
C35
1
0.8pF
C36
1
0.5pF
C37
1
4.7nH
C38
1
DNP
C40
2
5.1k
R1, R2
3
2.2k
R3, R5, R7
5
10k
R4, R13, R14, R15, R20
1
100k
R9
2
33R
R10, R11
2
2.7k
R12, R18
1
1M_1%
R16
1
510k_1%
R17

Seeed Studio XIAO nRF52840 v1.3 design files

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

Seeed Studio XIAO nRF52840 v1.3: common questions

What microcontroller does the Seeed Studio XIAO nRF52840 v1.3 use?

The Seeed Studio XIAO nRF52840 v1.3 is built around the PMOS_1.00.6*0.35MM, from the Nordic nRF family.

How big is the Seeed Studio XIAO nRF52840 v1.3 PCB?

The Seeed Studio XIAO nRF52840 v1.3 measures 21 × 17.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Seeed Studio XIAO nRF52840 v1.3?

79 components, from 48 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 Seeed Studio XIAO nRF52840 v1.3 design files?

From the Josephrp/meshtonic 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 Seeed Studio XIAO nRF52840 v1.3 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Seeed Studio XIAO nRF52840 v1.3 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.

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