ESP8266 microcontroller, ESP8266Ex chip, ESP8266’s versions, ESP-01, ESP-03, ESP-05, ESP-07, ESP-12E and ESP-12F, NodeMCU The Internet of Things (IoT) and the Industry 4.0. Distinct technological revolutions but with a common goal: To integrate equipment (digital or analog) to a computer network. And to be part of this revolution, the developer goes out of its way to include wired ethernet modules or WIFI modules in it ...