Have you tried ESP-NOW[0]? It's been a while since I used it but from what I remember it works really well between ESP devices and you can certainly do a many

Have you tried ESP-NOW[0]? It's been a while since I used it but from what I remember it works really well between ESP devices and you can certainly do a many to one/gateway approach. The range and power consumption is outstanding all things considered. [0] - https://www.espressif.com/en/news/ESP-NOW https://www.espressif.com/en/news/ESP-NOW