---
title: "[RE] poe-addon"
url: "https://maker.wiznet.io/jaden/projects/re-poe-addon/"
markdown_url: "https://maker.wiznet.io/jaden/projects/re-poe-addon/md"
type: "UCC: User Created Content"
author: "newAM"
author_url: "https://github.com/newAM/poe-addon?tab=readme-ov-file"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "newAM"
original_url: "https://github.com/newAM/poe-addon?tab=readme-ov-file"
published: "2024-04-01"
language: "en"
hardware: ["WIZnet W5500"]
likes: 0
views: 704
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# [RE] poe-addon

> PoE module

Original author: newAM (source: https://github.com/newAM/poe-addon?tab=readme-ov-file)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

![](https://maker.wiznet.io/upload/ckeditor5/258405668%5F1712010592%2Epng)

This project is a PoE module using the W5500.

Unlike the other modules, he used isolate DCDCs to avoid using transistors, which simplified the design but probably increased the unit cost quite a bit.

PoE relies on the PSE handshaking with the PD to determine how much power it should send once it knows the PD is connected.

![](https://maker.wiznet.io/upload/ckeditor5/258405668%5F1712010804%2Epng)

The initial PD detection is connected with a PD resistor value of 25k ohm, but the BOM list posted by the author has 24.4k ohm, so it seems to be a PoE module that supports PD detection.This project is a PoE module using W5500.

Unlike other modules, it uses an isolate DCDC and does not use transistors, which simplifies the design but probably increases the unit cost quite a bit.

PoE relies on the PSE handshaking with the PD to determine how much power it should send once it knows the PD is connected.

![](https://maker.wiznet.io/upload/ckeditor5/258405668%5F1712010804%2Epng)

Initial PD detection indicates that it is connected with a PD resistor value of 25k ohm, which appears to be a PoE module that supports PD detection, as the BOM list posted by the author has 24.4k ohm.

![](https://maker.wiznet.io/upload/ckeditor5/258405668%5F1712010902%2Epng)

---

Source: https://maker.wiznet.io/jaden/projects/re-poe-addon/