---
title: "PoE Test board production record - Let's test various modules"
url: "https://maker.wiznet.io/Alan/projects/poe-test-board-production-record-lets-test-various-modules/"
markdown_url: "https://maker.wiznet.io/Alan/projects/poe-test-board-production-record-lets-test-various-modules/md"
type: "WCC: WIZnet Created Content"
author: "Alan"
author_url: "https://maker.wiznet.io/Alan/"
original_author: "Alan"
published: "2023-07-07"
language: "en"
hardware: ["Raspberry Pi Pico", "WIZnet W5100S"]
likes: 1
views: 2063
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# PoE Test board production record - Let's test various modules

> I made a board to test PoE with W5100S + Pico board.

Original author: Alan

## Components

- **Raspberry Pi Pico** x 1 ([docs](https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html))
- **WIZnet W5100S** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5100S))

## Documents and links

- [GitHub](https://github.com/wiznetmaker/W5100S_Pico_PoE_Test/tree/main) (code)

## Article

![](https://maker.wiznet.io/upload/ckeditor5/850878847%5F1690827269%2Epng)

## **Story**

Hello.I'm making a PoE Test board now.

In general cases, it is recommended to purchase and use PoE (Power over Ethernet) modules as there are many affordable and good-quality options available in the market.

So, I have created a board that allows me to test the PoE module by attaching it to the W5100S.

![](https://hackster.imgix.net/uploads/attachments/1609400/image_jHXhD43RiM.png?auto=compress%2Cformat&w=740&h=555&fit=max)

I only needed to make a few modifications to the W5100S HAT board.

The circuit is configured as shown above.

![](https://hackster.imgix.net/uploads/attachments/1609410/image_318K6emiwY.png?auto=compress%2Cformat&w=740&h=555&fit=max)

Unlike the circuit, I had to completely reconfigure the PCB.

It was challenging because the RJ-45 connector was different, and the header turned out to be larger than expected.

![](https://hackster.imgix.net/uploads/attachments/1609414/image_9KXu1AlEL0.png?auto=compress%2Cformat&w=740&h=555&fit=max)

The board is designed as shown above! It looks very nice!

![](https://hackster.imgix.net/uploads/attachments/1609419/image_yt7okgvxNb.png?auto=compress%2Cformat&w=740&h=555&fit=max)

I waited for three days and finally received the PCB!

Now it's time to assemble it!

![](https://hackster.imgix.net/uploads/attachments/1609420/image_TjXp057Dcx.png?auto=compress%2Cformat&w=740&h=555&fit=max)

I have finished assembling the board. It was challenging because there were many 1005-sized components..

![](https://hackster.imgix.net/uploads/attachments/1609418/image_IWm8YrRvOy.png?auto=compress%2Cformat&w=740&h=555&fit=max)

I installed the Pico board and tested it, and it worked successfully.

That's great to hear! It's good to confirm that the power is being supplied well.

### **Issue**

The problem is that the board's appearance is unattractive. After connecting everything, it looks very unusual.

I will raise the Raspberry Pi Pico board up and move the PoE module down.

![](https://hackster.imgix.net/uploads/attachments/1609421/image_eg6iIBCGT4.png?auto=compress%2Cformat&w=740&h=555&fit=max)

Hmm... This also looks a bit strange

![](https://hackster.imgix.net/uploads/attachments/1609423/image_EVwNor2rw7.png?auto=compress%2Cformat&w=740&h=555&fit=max)

Which one looks better? Both work fine, but the form is strange.

![](https://hackster.imgix.net/uploads/attachments/1609424/image_6tk3Ais3fE.png?auto=compress%2Cformat&w=740&h=555&fit=max)

The power supply operates very well at 5V. Of course, connecting a load and testing it would be necessary to accurately determine if it is a reliable module.

![](https://maker.wiznet.io/upload/ckeditor5/850878847%5F1690827096%2Epng)

I can test various modules like this.
These modules are completely different in price and characteristics. Therefore, you can test these modules with this test board to select a good module.

![](https://maker.wiznet.io/upload/ckeditor5/850878847%5F1690827195%2Epng)

I can also test it by connecting a simple load. Some modules have significant characteristics depending on the load.

![](https://hackster.imgix.net/uploads/attachments/1609425/image_1DN6HmOl4E.png?auto=compress%2Cformat&w=740&h=555&fit=max)

By connecting the Pico W, you can easily use BLE to Ethernet or WiFi to Ethernet functionality.

Next time I'll post with a better form of module!

Thanks

[Go Project! Github](https://github.com/wiznetmaker/W5100S_Pico_PoE_Test/tree/main)

---

Source: https://maker.wiznet.io/Alan/projects/poe-test-board-production-record-lets-test-various-modules/