A Cheaper ESP8266 WiFi Shield for Arduino and Other Micros: Update: 29th Oct 2020 Tested with ESP8266 board library V2.7.4 – works Update: 23rd Sept 2016 Do Not use the Arduino ESP board library V2.3.0 for this project. V2.2.0 works Update: 19th May 2016 Rev 14 of this project revises libraries and code to w…