---
title: "Simple Remote Display with Mobile App"
url: "https://maker.wiznet.io/WIZnet/projects/simple-remote-display-with-mobile-app/"
markdown_url: "https://maker.wiznet.io/WIZnet/projects/simple-remote-display-with-mobile-app/md"
type: "UCC: User Created Content"
author: "bjnhur"
author_url: "https://www.hackster.io/bjnhur/simple-remote-display-with-mobile-app-3862e7"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "bjnhur"
original_url: "https://www.hackster.io/bjnhur/simple-remote-display-with-mobile-app-3862e7"
published: "2023-02-21"
language: "en"
hardware: ["Arduino MKR 485 Shield"]
likes: 10
views: 205
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Simple Remote Display with Mobile App

> How to make a simple remote display system with an OLED display and Arduino Ethernet. You can absolutely send your messages via mobile app.

Original author: bjnhur (source: https://www.hackster.io/bjnhur/simple-remote-display-with-mobile-app-3862e7)

## Components

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

## Article

**DETAILS**

## **Story**

This project will show you how to make a simple remote display demo with mobile app. A screenshot of the actual execution is shown below.

![Demo shot](https://hackster.imgix.net/uploads/attachments/717095/img008_Ur0X2zT5B8.png?auto=compress%2Cformat&w=740&h=555&fit=max)

I’m sure, you’ll have no problem to connect H/W components and read this project source code. (**SPI** for “Ethernet Shield” & **i2c** for “0.96 Inch OLED I2C Display 128 x 64”).

After you download this project source code, you can run this demo as upper.

Before use this code, you need to install 2 below libraries.

1. [https://github.com/adafruit/Adafruit_SSD1306 (](https://github.com/adafruit/Adafruit_SSD1306)SSD1306 library) or custom zip file.

- [Adafruit_SSD1306-1.1.2.zip](http://ts.devbj.com/attachment/cfile26.uf@999047455C3828DE295AFC.zip) for (128*64) , I modified the code as below in Adafruit_SSD1306.h

![select SSD1306_128_64](https://hackster.imgix.net/uploads/attachments/717284/img013.png?auto=compress%2Cformat&w=740&h=555&fit=max)

2. [https://github.com/adafruit/Adafruit-GFX-Library (](https://github.com/adafruit/Adafruit-GFX-Library)GFX library)

The following is a step – by – step explanation of the screens you will see on the mobile app. Before this, please install WIZnet IoT app on your mobile device.

![Make profile for this demo](https://hackster.imgix.net/uploads/attachments/717101/img009_vBrg0X675A.png?auto=compress%2Cformat&w=740&h=555&fit=max)

![Make your screen](https://hackster.imgix.net/uploads/attachments/717102/img010_Agk7tIwybV.png?auto=compress%2Cformat&w=740&h=555&fit=max)

![Connect to board](https://hackster.imgix.net/uploads/attachments/717103/img011_BKT8rdzb2c.png?auto=compress%2Cformat&w=740&h=555&fit=max)

![Send your message](https://hackster.imgix.net/uploads/attachments/717104/img012_TPMxtrhylt.png?auto=compress%2Cformat&w=740&h=555&fit=max)

The message protocol between mobile app and Arduino is very simple as follows.

![Message format](https://hackster.imgix.net/uploads/attachments/714250/msg1_ww3V5s0khb.jpg?auto=compress%2Cformat&w=740&h=555&fit=max)

Message format

**DOCUMENTS**

Code

Simple Remote display example with mobile APP for Arduino Ethernet[![](https://oldmaker.wiznet.io/wp-content/themes/onepress/assets/images/icon-link.png)](https://create.arduino.cc/editor/bongjun/3321b66e-31f9-4b5b-8198-82d1e1ab0d0b/preview)

---

Source: https://maker.wiznet.io/WIZnet/projects/simple-remote-display-with-mobile-app/