# MeshPoE-S3

**Project Name:** MeshPoE-S3  
**Author:** Nickie Deuxyeux  
**Date:** 2026-03-18  
**License:** Creative Commons (CC BY)  

---

## Description
The MeshPoE-S3 is a universal mesh node designed for use in LoRA mesh networks such as **Reticulum**, **Meshtastic**, and **MeshCore**.
It is mostly designed for stationary deployment and PoE power.

- Based on the [WaveShare ESP32-S3 ETH Development Board](https://www.waveshare.com/esp32-s3-eth.htm)  
- LoRA modules: [EByte E22-series](https://www.cdebyte.com/products/E22-900M30S)

Key features:

- Compact form factor** suitable for outdoor mesh nodes  
- Power-over-Ethernet (PoE)** support for convenient outdoor or roof deployment  
- Ethernet connectivity** for reliable wired networking  
- GPIO headers** for easy customization and expandability  
- Optional **DS3231MZ+ RTC** for timekeeping  
- Optional **I2C** environment sensor support (BME280, BME680, etc)  

This repository contains the KiCad project files, PCB schematics, board images, Gerbers for fabrication. 
You are welcome to alter the design to fit your requirements.
---

## Project Structure
```
MeshPoE-S3/
├── KiCad/
│ ├── MeshPoE-S3.kicad_pcb     # PCB layout
│ ├── MeshPoE-S3.kicad_prl     # PCB plot file
│ ├── MeshPoE-S3.kicad_pro     # Project file
│ └── MeshPoE-S3.kicad_sch     # Schematic
├── Images/
│ ├── MeshPoE-S3-Front.png     # Front layer image
│ ├── MeshPoE-S3-Back.png      # Back layer image
│ └── MeshPoE-S3-Schematic.png # Schematic overview
├── Gerbers/
│ └── Gerbers-MeshPoE-S3.zip   # Exported Gerbers for fabrication
└── README.md                  # This file
```
## Images

<table>
<tr>
<td align="center">
<img src="Images/MeshPoE-S3-Front.png" alt="Front View" width="300"/>
</td>
<td align="center">
<img src="Images/MeshPoE-S3-Back.png" alt="Back View" width="300"/>
</td>
</tr>
<tr>
<td align="center">Front View</td>
<td align="center">Back View</td>
</tr>
</table>

## Pin Assignments
<table>
<tr>
<td align="center">LoRa Module</td>
<td align="center">I2C</td>
<td align="center">Other</td>
</tr>
<tr>
<td valign="top">

| Signal        | GPIO |
|---------------|------|
| CS(NSS)       | 16   |
| SCLK(SCK)     | 18   |
| MISO          | 3    |
| MOSI          | 15   |
| BUSY          | 1    |
| RST           | 2    |
| DIO(IRQ)      | 0    |
| TXEN          | 34   |
| RXEN          | 35   |
</td>
<td valign="top">

| Signal        | GPIO |
|---------------|------|
| SCL           | 17   |
| SDA           | 21   |
</td>
<td valign="top">

| Function      | GPIO |
|---------------|------|
| User Button   | 36   |
</td>
</tr>
</tr>
</table>

## Schematic
![Schematic](Images/MeshPoE-S3-Schematic.png)

## Bill Of Materials
<table>
<tr>
<td align="center">🔳Modules</td>
<td align="center">⚡Capacitors</td>
</tr>
<tr>
<td valign="top">

| Ref           | Qty | Part          | Description / Notes             | Footprint    |
| ------------- | --- | ------------- | ------------------------------- | ------------ |
| U1            | 1   | ESP32-S3-ETH  | MCU module                      | ESP32-S3-ETH |
| U2            | 1   | E22-900M30S   | LoRa module                     | E22-900M30S  |
| U3            | 1   | DS3231MZ+     | RTC                             | SOIC-8       |
| SSD1306 OLED  | 1   |               | OLED display                    | HN1x4        |
</td>
<td valign="top">

| Ref               | Qty | Value          | Notes                        | Footprint |
| ----------------- | --- | -------------- | ---------------------------- | --------- |
| C1,C2,C4,C5,C6,C9 | 2   | 100nF          | Decoupling                   | 1206      |
| C3                | 1   | 470nF          | Bulk                         | 1206      |
| C7,C8             | 2   | TMCMB1C476MTRF | 47µF tantalum/polymer        | 1206      |
</td>
</tr>
</tr>
</table>

<table>
<tr>
<td align="center">🧲Inductors</td>
<td align="center">🔩Resistors</td>
<td align="center">🔘Switches</td>
<td align="center">🔗Connectors</td>
</tr>
<tr>
<td valign="top">

| Ref | Qty | Value | Footprint |
| --- | --- | ----- | --------- |
| L1  | 1   | 15µH  | 1210      |
</td>
<td valign="top">

| Ref | Qty | Value | Footprint |
| --- | --- | ----- | --------- |
| R1  | 1   | 10k   | 1206      |
</td>
<td valign="top">

| Ref | Qty | Part             | Footprint  |
| --- | --- | ---------------- | ---------- |
| S1  | 1   | SPST Push Button | 6x6x5mm    |
</td>
<td valign="top">

| Ref    | Qty | Part        | Description            |
| ------ | --- | ----------- | ---------------------- |
| J1, J2 | 2   | 61302011821 | 1x20 2.54mm pin header |
</td>
</tr>
</tr>
</table>

## 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.