“ESP8266 needs no introduction. It is the cheapest WIFI module available and one can find many interesting projects online. ESP8266 has many variants starting from ESP01 to ESP13 (getting added every few months) I got really excited watching few applications of ESP8266 and bought a ESP12E module. It was not easy to work with this module as the pins are not breadboard friendly or PCB friendly. I had to build a custom dev board to test it out. I could not afford to buy a ready to use ESP8266 dev board, as these are very expensive, in India. And there is no fun in it. To get started with this module, I had to pick information from several post/blogs etc. In this instructable I will consolidate all info, issues and their solutions, I discovered during build and testing.”