Screen Sync For Windows Devices

Step 1 — Install Node.js

1. Download the latest version of Node.js from:
   https://nodejs.org/en
2. Run the installer and complete the installation using default settings.
3. Verify Node.js installed correctly:
   • Open Command Prompt
   • Run:
4. node -v
5. If installed correctly, a version number will appear.

Step 2 — Download the Screen Sync Script

1. Download the Screen Sync script:
   https://drive.google.com/file/d/1iuzgBUb8sMIF6ENM40YvUuamFPFuy9lG/view
2. Save the file as:

screen_sync.js

Step 3 — Create Server Folder

1. Create a new folder where the sync server will run from. Example:

C:\NowSignage

Copy screen_sync.js into this folder.

Step 4 — Start the Screen Sync Server

1. Open Command Prompt
2. Navigate to your folder:

cd C:\NowSignage

     3. Initialize Node:

npm init -y

     4. Install WebSocket dependency:

npm install ws

     5. Start the sync server:

node screen_sync.js

Leave this Command Prompt window open. This PC is now acting as the Screen Sync Server.

Step 5 — Get the Server IP Address

You can see this in your network settings of the device, or alternatively,

1. Open another Command Prompt window
2. Run:

ipconfig

1. Look for IPv4 Address, for example:

192.168.1.95

This is your Screen Sync server IP.

Step 6 — Configure Screen Sync in NowSignage

1. Open NowSignage CMS
2. Go to Screen Sync
3. In WebSocket Server Address, enter:

<Server-IP>:5001

Example:

192.168.1.95:5001

1. Click Update

Step 7 — Add Screens to Sync Group

1. In your Screen Sync Group
2. Add all screens you want synchronized:
   • Use search OR navigation arrows
   • Click the + icon next to each screen
3. Click Update

Step 8 — Reboot Screens

1. Reboot all screens in the sync group
2. Wait 1–3 minutes
3. Screens will connect and synchronize automatically

Important Notes

• The server PC must remain powered on
• Do not close the Command Prompt running the server
• All screens must be on the same network
• Port 5001 must be open on the server

Step 8 — If you need to reboot your device or have a daily reboot in place.

Startup Folder Method Setup

First, create a batch file to make it easy:

1. Open Notepad and paste this:

  @echo off

   cd C:\NowSignage\

   node screen_sync.js

Save it as start_screen_sync.bat in C:\NowSignage\screen-sync

1. Press Win + R, type shell:startup, hit Enter
2. Copy your start_screen_sync.bat file into that folder

This will launch the server automatically each time the device starts up. Note - Make sure that the need to login is disabled on the device as this will prevent it from running until the device is logged into.