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Wi-Fi Clients Disconnect When 15+ ESP32 Devices Are Connected (GT-AX11000)

doganalihasan
Level 7

Hello,

I’m using the ASUS GT-AX11000 router in an isolated offline setup — no internet, only LAN. My goal is to communicate between a PC (GCS) and 16 drones, each equipped with an ESP32-based Wi-Fi module. All devices have static IP addresses, and there are no other clients on the network.

 

Here’s what happens:

When I connect up to 14 drones, everything works perfectly.

As soon as I connect the 15th device, all drones become unreachable — no ping response, and communication breaks completely.

If I disconnect the extra devices and reduce the number back to 14 or fewer, everything resumes normal operation.

Additional info:

GCS is connected to the router via Ethernet.

ESP32s are connected over 2.4 GHz Wi-Fi with static IPs (e.g., 192.168.1.100–115).

I’m wondering if this is due to a limit on the number of active Wi-Fi associations, or if there’s a configuration I’ve missed to support more simultaneous clients (even without internet).

Any suggestions or known limitations for high-density ESP32 connections would be appreciated.

Thank you!

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1 REPLY 1

jzchen
Level 17

I am unfamiliar with this system but tried to search in different terms...

The GCS, does it have a limit on number of simultaneously controlled ESP32s?  I could not find a clear answer to this...