ESP8266-12 running ghost code on its own. Help!

Using Arduino Networking, Protocols, and Devices
#1

I have flashed the esp-12 with my custom Arduino code. It works great. I control a couple of Solid State Relays with it. No problem there.

What bothers me is something funny indeed. Nowhere in my code, have I specified Wireless Connections. Nowhere! But, right after flashing or even regular restarts, the damn thing connects to my wifi?!? How is that possible?

N.B.: Around 2 weeks ago, I had once played around with the AT command set. I had given it the user/pass. But, I have flashed it, re-uploaded my code a hundred times after it.

#2

How are you determining that it has connected to your wifi ?

I suspect you are going to your router and looking in the list of available connections and there is some latent (old) connection that says ESP ?

Wise ass remark: Maybe it has achieved self awareness. Drive it out into the country and throw it into a field. OK - I got that out of my system.

What code did you flash and what was on the micro prior to your flashing it ?

#3

If you are not using the WiFi radio, turn it off.

#4

This is just how the ESP8266 works. It saves your authentication information to non-volatile memory that is not erased when you upload a new sketch and automatically connects unless you tell it not to in your code. You actually need to set different information to overwrite the previous.

#5

Yes to all your suggestions. Turns out that the ESP doesn’t get “all” of its memory flashed when I re-upload sketches to it. So, I can invoke the EEPROM libs to delete it.

Thanks for your help!

#6