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I bought an ESP-12 (ESP8266) module last year and, after mounting it in a DIL format (via a piece of Veroboard), I never got around to actually using it.   A few weeks ago I dug the ESP-12 module out of the drawer, mounted it on my breadboard, added a 3.3v regulator, voltage divider and CD4011 (2x logic gates wired as a non-inverting buffer) and then fiddled away for a few evenings until I got it to boot properly. Satisfied with progress I ordered some more modules...the aim was to control ...