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ESP32S3

Josephrp·meshtonic·pcb/libs/Seeed Studio XIAO ESP32S3/ESP32S3.kicad_pcb

ESP32S3 PCB layout, top view — open source ESP32 board by Josephrp
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About the ESP32S3 PCB

ESP32S3 is an open source ESP32 PCB design by Josephrp, published on GitHub under the Custom license license. It is a 2-layer board measuring 17.8 × 21.1 mm, with 71 components from 38 distinct parts.

Its main chip is the LP0404N3T5G, from the ESP32 family. Other key parts include the ESP32-S3R8, SGM6029CYG/TR, SGM40567-4.2XG/TR and GD25Q64ENIGR. By type, the board carries 28 capacitors, 13 resistors, 8 test points, 4 ICs, 4 inductors and 3 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.

ESP32S3, from the project README
From the project README

Main components on the ESP32S3

ESP32-S3R8SGM6029CYG/TRSGM40567-4.2XG/TRGD25Q64ENIGR

ESP32S3 bill of materials (BOM)

71 components, 38 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3R8
U1
1
SGM6029CYG/TR
U3
1
SGM40567-4.2XG/TR
U4
1
GD25Q64ENIGR
U5
1
LP0404N3T5G
Q1
1
40MHz/306011364
X1
2
DNP
J1, J2
1
DF40C-30DP-0.4V(51)
J3
1
U.FL-R-SMT-1
ANT1
1
VBAT
BAT0
1
GND
GND0
2
SKTAAAE010/311021459
K1, K2
8
—
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8
1
UBF31-0171
USB0
1
RED
CHG0
1
LMBR4010BST5G
D2
1
Yellow
D3
1
2nH
L1
1
3.3nH
L2
1
DNP
L3
Show 18 more
QtyPartRefs
1
470nH
L4
4
DNP
C1, C2, C17, C20
4
2.2uF
C3, C9, C13, C16
3
4.7uF
C4, C5, C6
3
10pF
C7, C8, C28
4
1uF
C10, C21, C25, C26
8
100nF
C11, C14, C15, C19, C22, C23, C29, C30
1
10nF
C12
1
1pF
C18
2
5.1K
R1, R2
2
22R
R3, R4
1
0R
R5
1
499R
R6
3
10K
R7, R8, R11
1
100K
R9
1
220K
R10
1
249K
R13
1
1.5K
R15

ESP32S3 design files

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

ESP32S3: common questions

What microcontroller does the ESP32S3 use?

The ESP32S3 is built around the LP0404N3T5G, from the ESP32 family.

How big is the ESP32S3 PCB?

The ESP32S3 measures 17.8 × 21.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32S3?

71 components, from 38 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 ESP32S3 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 ESP32S3 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 ESP32S3 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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