---
title: "Building an Automated ROR System with W5500"
url: "https://maker.wiznet.io/TheoIm/projects/building-an-automated-ror-system-with-w5500/"
markdown_url: "https://maker.wiznet.io/TheoIm/projects/building-an-automated-ror-system-with-w5500/md"
type: "UCC: User Created Content"
author: "앵"
author_url: "https://cafe.naver.com/skyguide/370632"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "앵"
original_url: "https://cafe.naver.com/skyguide/370632"
published: "2025-11-21"
language: "en"
hardware: ["WIZnet W5500", "Arduino UNO"]
likes: 0
views: 797
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Building an Automated ROR System with W5500

> Remote roll-off roof system powered by Arduino and W5500, enabling automated roof ctrl, power management, environmental monitoring, and remote astrophotograpy.

Original author: 앵 (source: https://cafe.naver.com/skyguide/370632)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))
- **Arduino UNO** x 1 ([docs](https://www.farnell.com/datasheets/1682209.pdf))

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

## 1️⃣ Project Purpose — Why W5500?

### 🎯 Ultimate Goal

This project is led by **앵이**, **anactive core member of “**별하늘지기**”**, **one of Korea’s largest and most respected amateur astronomy communities** on Naver with over 50,000 members. His involvement brings significant credibility and practical insight to this Arduino + W5500–based roll-off roof observatory, proving that advanced remote astrophotography can be achieved at a fraction of the cost of commercial systems.

### 💡 Requirements for This Goal

To achieve true remote operation, the system needs:

- **Stable Communication**
  - Observatory roof open/close control
  - Battery power/charging management
  - Temperature & humidity monitoring
  - Ventilation & dehumidification control
  - Remote PC boot trigger (WOL) → All must be controlled in real-time

- **Long-term Operational Stability**
  - Outdoor environment exposure
  - 24/7 operation capability
  - Reliability even during reboots or failures

### 🔌 Why WIZnet W5500 Was Chosen

- **Stable Hardware TCP/IP Stack**
  - Excellent stability even in unstable network traffic conditions

- **High Compatibility with Arduino Nano**
  - Perfect for real-time control with fast response times

- **Proven Performance**
  - Successfully tested in WOL triggers, web servers, and device control scenarios

### 👉 Conclusion

**W5500 serves as the "nervous system" of this remote observatory.** All core control operations rely on the stable wired Ethernet network provided by W5500.

---

## 2️⃣ Overall System Flow

Here's the complete workflow of the remote observatory control system:

```plaintext
User → Dashboard → W5500 + Arduino Controller → Observatory Hardware Control
                          ↓
                      Discord Webhook Notifications
```

### 2-1. User Interface

- Access web UI from smartphone/PC

- Monitor observatory status

- Control roof opening/closing, power on/off, dehumidification, and ventilation

### 2-2. Network Control Layer

- W5500 connected to Arduino Nano

- Receives commands and executes hardware control

### 2-3. Hardware Control Layer

- **ROR roof opening/closing**

- **Battery charging/discharging monitoring**

- **Temperature & humidity-based equipment control**

- **Fan, ventilation, dehumidifier operation**

- **LED lighting control**

- **Remote PC boot (WOL)**

### 2-4. Notification System

- Real-time event detection via Discord Webhook
  - Roof closed/opened
  - Battery power cutoff
  - Charging started/completed
  - Login success/failure logs

---

## 3️⃣ Modules Used and Their Roles

**Note: Only confirmed modules are listed below. No speculation included.**

### 🔧 (1) Control System

**✔ Arduino Nano**

- Main MCU for overall device control

- Handles sensor control and motor/relay operations

**✔ WIZnet W5500 (Wired Ethernet)**

- Processes remote commands (roof control, power, fans, dehumidifier, etc.)

- Triggers Discord webhook notifications

- Sends WOL (Wake On LAN) packets

- **Core communication module connecting web UI and hardware equipment**

### 🔋 (2) Power System

**✔ Solar Panel + Lead-Acid Battery Charging**

- Automatic charging during daytime

- Battery operation at night/during imaging sessions

**✔ LFP (Lithium Iron Phosphate) Battery**

- Powers entire observatory equipment

- Status monitored by Arduino

### 🌡 (3) Environmental/Utility Control

**✔ Fans / Ventilation / Dehumidifier**

- Speed control and On/Off via W5500 communication

- Manual/automatic mode switching

**✔ Temperature & Humidity Sensor**

- Displays current status on UI

- Used for control condition determination

**✔ Heater Fan, Peltier Heater**

- Controls dew and moisture

- Maintains conditions around OAG and main camera

### 📷 (4) Astrophotography Equipment

**Imaging Setup:**

- **Telescope:** Redcat51

- **Mount:** AM5

- **Imaging Camera:** 26000KMA

- **Guide Camera:** 174mm mini (Touptek OAG)

- **Filter:** Antlia 36mm 3nm

- **Accessories:** DIY CAA, Gemini EAF, DIY AutoFlat

**Imaging Session:**

- Ha: 18 frames × 300s

- O3: 18 frames × 300s

- Total exposure: 3 hours

- Post-processing: PixInsight

---

## 4️⃣ Results and Achievements

### 📸 1) ROR Observatory Exterior

![](https://maker.wiznet.io/upload/ckeditor5/392965497%5F1764000641%2Epng)

- SActual sliding roof structure implemented

- Direct waterproofing and insulation construction

- Continuous improvements made based on field issues

- Now operating stably

### 📸 2) Interior Equipment Configuration

![](https://maker.wiznet.io/upload/ckeditor5/392965497%5F1764000685%2Epng)

- Camera/mount/filter wheel/guide system

- Cable management and controller placement

- W5500-based controller installed inside

### 📸 3) Remote Control UI

![](https://maker.wiznet.io/upload/ckeditor5/392965497%5F1764000724%2Epng)

**Available functions:**

- Roof open/close

- Power On/Off

- Battery charging status

- Temperature/humidity, fan, ventilation control

- LED brightness adjustment

- Status log display

The UI updates in real-time, operating seamlessly from remote locations thanks to W5500's stable communication.

### 📸 4) Discord Webhook Notification System

![](https://maker.wiznet.io/upload/ckeditor5/392965497%5F1764000742%2Epng)

- Roof close command executed

- Battery power OFF

- Charging started/completed

- Login timestamp recorded

This system significantly enhances observatory operational reliability.

### 📸 5) First Light Results (NGC6888, etc.)

![](https://maker.wiznet.io/upload/ckeditor5/392965497%5F1764000757%2Epng)

![](https://maker.wiznet.io/upload/ckeditor5/392965497%5F1764000765%2Epng)

- Captured: 2025.04.26

- Successful remote imaging

- Redcat51 + 26000KMA + AM5 combination

- NINA-based remote imaging workflow verified

---

## ⭐ Conclusion

This ROR observatory project is not just a DIY build — **it's an excellent example of creating a fully automated remote observation system using W5500-based network control.Key Achievements:**

- ✅ Remote observation control

- ✅ Power/environmental automation

- ✅ Discord webhook integration

- ✅ Stability-focused design

- ✅ Successful first light imaging

**At the heart of all these achievements lies W5500's stable wired network communication.**

From WIZnet's perspective, this case demonstrates **"How W5500 can serve as the core of IoT control equipment in real outdoor environments"** — making it an outstanding reference implementation.

---

Source: https://maker.wiznet.io/TheoIm/projects/building-an-automated-ror-system-with-w5500/