Step 1: Check Configuration Settings

1. Sync Button

   • On all controllers that you want to sync, ensure the Sync button is selected (refer to the image below for guidance).
   • The Master Controller can also have the Sync button selected.
     

2. Verify Sync Setup

   • Go to the Sync Setup section on all controllers and confirm the required settings are correctly configured. (Refer to the second image for details.)
     

Step 2: Check Router Settings

For syncing to work, controllers must communicate over UDP Port 21324. If they aren’t syncing, the issue may be with your router.

1. Enable UDP

   • Check that UDP communication is enabled on your router.
   • If UDP is disabled, open Port 21324 manually using your router’s port forwarding settings. Consult your router’s documentation for instructions.

2. Disable Client/AP Isolation

   • Some routers have advanced settings like Client Isolation or AP Isolation, which block devices from communicating with each other.
   • Disable these settings to allow controllers to sync.

Step 3: Use Scheduling as a Backup Solution

If you’re unable to get the controllers to sync, you can set identical schedules for each controller as a workaround:

1. Create schedules for the lights to turn on and switch presets at the same time.
2. Ensure the schedules are identical on all controllers so the lights appear synced.

Learn More About Scheduling and Presets

For detailed guidance on creating schedules and presets:

• Watch our video tutorial: WLED Features and Settings
• Explore WLED documentation online by searching for "WLED Scheduling" or "WLED Presets."

There is a wealth of information available to help you take full advantage of WLED’s features.