---
title: "Simple MQTT Message Board with Arduino Ethernet"
url: "https://maker.wiznet.io/WIZnet/projects/simple-mqtt-message-board-with-arduino-ethernet/"
markdown_url: "https://maker.wiznet.io/WIZnet/projects/simple-mqtt-message-board-with-arduino-ethernet/md"
type: "UCC: User Created Content"
author: "Bongjun Hur"
author_url: "https://www.hackster.io/bjnhur/simple-mqtt-message-board-with-arduino-ethernet-73672d"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Bongjun Hur"
original_url: "https://www.hackster.io/bjnhur/simple-mqtt-message-board-with-arduino-ethernet-73672d"
published: "2023-02-03"
language: "en"
hardware: ["Arduino MKR 485 Shield"]
likes: 2
views: 508
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Simple MQTT Message Board with Arduino Ethernet

> Build a simple MQTT message board with Arduino Ethernet.

Original author: Bongjun Hur (source: https://www.hackster.io/bjnhur/simple-mqtt-message-board-with-arduino-ethernet-73672d)

## Components

- **Arduino MKR 485 Shield** x 1 ([docs](https://store.arduino.cc/products/arduino-mkr-485-shield))

## Article

**DETAILSSimple MQTT message board with Arduino Ethernet version 2 library:** <https://github.com/arduino-libraries/Ethernet>). Just look at the result pics first!

![](https://hackster.imgix.net/uploads/attachments/733101/img095_2kwXVrwvou.png?auto=compress%2Cformat&w=680&h=510&fit=max)

To compile this project, you need to install mqtt library from <https://github.com/256dpi/arduino-mqtt>, and refer to my previous project <https://create.arduino.cc/projecthub/bjnhur/simple-remote-display-with-mobile-app-3862e7> for the display.

For this example, you need to register to [https://shiftr.io](https://shiftr.io/), following the below pics.

![](https://hackster.imgix.net/uploads/attachments/733105/img091_F8nTgW3y4T.png?auto=compress%2Cformat&w=680&h=510&fit=max)

![](https://hackster.imgix.net/uploads/attachments/733103/img092_JMBi2WHDrx.png?auto=compress%2Cformat&w=680&h=510&fit=max)

![](https://hackster.imgix.net/uploads/attachments/733104/img093_GtzQhdAYVw.png?auto=compress%2Cformat&w=680&h=510&fit=max)

To send a message to your Arduino Ethernet board, you also need to install a MQTT client tool on your PC. I’ll introduce a “MQTTLens” chrome app.

After that, on your pc, we can send message through MQTT (thanks to [https://shiftr.io](https://shiftr.io/) & MQTTLens – chrome app)

![](https://hackster.imgix.net/uploads/attachments/733107/img087_IKt8x1alvO.png?auto=compress%2Cformat&w=680&h=510&fit=max)

![](https://hackster.imgix.net/uploads/attachments/733109/img088_oOf9rcqp1i.png?auto=compress%2Cformat&w=680&h=510&fit=max)

![](https://hackster.imgix.net/uploads/attachments/733108/img089_pGZBSEp24Y.png?auto=compress%2Cformat&w=680&h=510&fit=max)

You can get more information about MQTTLens tool and https://shiftr.io from

– [MQTT Client tool – MQTTLens (https://wiznxt.tistory.com/581)](https://wiznxt.tistory.com/581)

– [MQTT broker or cloud service (https://wiznxt.tistory.com/582)](https://wiznxt.tistory.com/582)

**But Korean version** (might read these postings with Google translator;))

Finally, I believe, you can see a good result as the below pics.

![](https://hackster.imgix.net/uploads/attachments/733118/img094_Lj8s3ahWke.png?auto=compress%2Cformat&w=680&h=510&fit=max)

![](https://hackster.imgix.net/uploads/attachments/733120/img_6287_hRefILZIJ7.jpg?auto=compress%2Cformat&w=680&h=510&fit=max)

---

Source: https://maker.wiznet.io/WIZnet/projects/simple-mqtt-message-board-with-arduino-ethernet/