---
title: "DIY board SAMD21, w5500, ULN2803 and TLC59711"
url: "https://maker.wiznet.io/louis_m/projects/diy-board-samd21%2C-w5500%2C-uln2803-and-tlc59711/"
markdown_url: "https://maker.wiznet.io/louis_m/projects/diy-board-samd21%2C-w5500%2C-uln2803-and-tlc59711/md"
type: "UCC: User Created Content"
author: "r/electronics"
author_url: "https://www.reddit.com/r/electronics/comments/fvw5l2/diy_board_samd21_w5500_uln2803_and_tlc59711/"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "r/electronics"
original_url: "https://www.reddit.com/r/electronics/comments/fvw5l2/diy_board_samd21_w5500_uln2803_and_tlc59711/"
published: "2022-11-30"
language: "en"
hardware: ["WIZnet W5500"]
likes: 2
views: 895
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# DIY board SAMD21, w5500, ULN2803 and TLC59711

> DIY board SAMD21, w5500, ULN2803 and TLC59711

Original author: r/electronics (source: https://www.reddit.com/r/electronics/comments/fvw5l2/diy_board_samd21_w5500_uln2803_and_tlc59711/)

## 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

It's made around SAMD21, w5500 ethernet chip and have one ULN2803 and 2 TLC59711 led drivers.

It's made to control a game with:
- 12V buzzers
- 12V RGB leds
- bumper switches

The game have hundreds of RGB bumpers spread in a large room, once one lights up with the right color you'd need to run to press it. And so on.

The game engine is powered by a Node.js server communicating through UDP to the ~30 boards.

Technical details:

- I use a DIY reflow oven to assemble the boards.
- I use uf2 bootloader
- I use the arduino framework
- I use platformio

Don't hesitate if you have any questions.

[![r/electronics - DIY board SAMD21, w5500, ULN2803 and TLC59711](https://preview.redd.it/hgrj82av76r41.jpg?width=4000&format=pjpg&auto=webp&s=286a52c72a11f145d9c8414da62d4f0da68c6766)](https://preview.redd.it/hgrj82av76r41.jpg?width=4000&format=pjpg&auto=webp&s=286a52c72a11f145d9c8414da62d4f0da68c6766)

---

Source: https://maker.wiznet.io/louis_m/projects/diy-board-samd21%2C-w5500%2C-uln2803-and-tlc59711/