The MeshAdventurer-S3 is a universal mesh radio designed for use in LoRA mesh networks such as Reticulum, Meshtastic, and MeshCore. It is inspired by MeshAdventurer project by Chris Myers.

Based on the widely available ESP32-S3-DevKit-C clone board
LoRA modules: EByte E22-series

Key features:

**Fully featured for all popular mesh networks
**Wide input voltage support for convenient mobile usage
**GPIO headers for easy customization and expandability
**Optional DS3231 RTC for timekeeping
**Optional I²C environment sensor support (BME280, BME680, etc)
**Optional ATGM336H GNSS receiver support
**Optional EC11 Rotary Encoder support

This repository contains the KiCad project files, PCB schematics, board images, Gerbers for fabrication. A case design is also available as a Fusion 360 project and a set of STL files for 3D printing. You are welcome to alter the design to fit your requirements.

Project Structure

MeshAdventurer-S3/
├── Case/
│ ├── STL/                            # Case part files
│ ├── MeshAdventurer-S3.f3d           # Fusion 360 Project
├── KiCad/
│ ├── MeshAdventurer-S3.kicad_pcb     # PCB layout
│ ├── MeshAdventurer-S3.kicad_prl     # PCB plot file
│ ├── MeshAdventurer-S3.kicad_pro     # Project file
│ └── MeshAdventurer-S3.kicad_sch     # Schematic
├── Images/
│ ├── MeshAdventurer-S3-Front.png     # Front layer image
│ ├── MeshAdventurer-S3-Back.png      # Back layer image
│ └── MeshAdventurer-S3-Schematic.png # Schematic overview
├── Gerbers/
│ └── Gerbers-MeshAdventurer-S3.zip   # Exported Gerbers for fabrication
└── README.md                         # This file

Images


Front View	Back View	Case

Pin Assignments

LoRa Module

GNSS Module

I2C

Other

Signal	GPIO
SCLK(SCK)	1
RST	2
MISO	40
CS(NSS)	39
TXEN	38
DIO2	37
MOSI	18
BUSY	7
DIO(IRQ)	15
RXEN	8

Signal	GPIO
RX	3
TX	21
PPS	5

Signal	GPIO
SCL	42
SDA	41

Function	GPIO
User Button	4
NeoPixel LED	48
Encoder Up	36
Encoder Press	35
Encoder Down	0
Voltage Sense	6

Schematic

Bill Of Materials

🔳Modules & Semiconductors

📺Displays & UI

⚡Capacitors

Ref	Qty	Part	Description	Footprint
U1	1	LM7805	5V linear regulator	TO-252
U2	1	E22-900M30S	LoRa module	Custom
U3	1	BME280	Temp / Humidity / Pressure sensor	Custom
U4	1	ESP32-S3-N16R8	MCU + Flash + PSRAM	Custom
U5	1	ATGM336H	GPS module	Custom
U6	1	DS3231M	RTC	SOIC-16
Q1	1	2SC1815	NPN transistor	SOT-23

Ref	Qty	Part	Description
PCB1	1	SSD1306-OLED	OLED display module
ENC1	1	EC11E Rotary Encoder	Rotary encoder with push
SW1	1	SPST Push Button	User input
BZ1	1	Buzzer	Audio indicator

Ref	Qty	Value	Notes	Footprint
C1	1	0.33µF	regulator input	ECAP 4x3.9
C2	1	100nF	Decoupling	0805
C3, C4	2	100µF	Bulk	Tantalum
C5, C6, C7	3	100nF	Decoupling	0603
C8, C9, C10	3	10nF	Filtering	0603

🔩Resistors

🔗Connectors

Ref	Qty	Value	Footprint
R1,R2,R6,R7,R9	5	10KΩ	0603
R3	1	100KΩ	0603
R4,R5,R10,R11,R12	5	1KΩ	0603
R8	1	100Ω	0603

Ref	Qty	Part	Description
J1, J2	2	61302011821	1x20 2.54mm pin header

License

This project is licensed under Creative Commons Attribution (CC BY). You may share and adapt the material as long as appropriate credit is given.