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By alessandro308
#64239 I'd like to use my ESP-01 without any TCP/UDP layer. Can I remove this layer reflashing the firmware with my own written? The problem is that I prefer to send radio signal without having any IP address/router network that implies that each ESP-01 is in the same network. My aim is to send a radio signal and all node that are in the area can receive the message without any sync.
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By alex_g
#64286 I'm not really sure what you are trying to do, but it sounds hard.

Wouldn't it be easier to set up an HTTP broadcast / multicast?
Or even an MQTT setup, if you have a machine to act as a broker. All nodes would respond to whatever you want them to in that case, and the coding/overhead would be minimal.

Removing TCP/UDP as you imply, would invalidate the whole point of the ESP8266, wouldn't it? What would you have left? An inaccessible wifi frequency transmitter, that only Espressif could really hack? But maybe I misunderstood what you are trying to do....