ESP8266 WiFi Module
Overview of the ESP8266 WiFi Module The ESP8266 requires 3.3V power--do not power it with 5 volts The ESP8266 is a really useful, cheap WiFi module for controlling devices over the Internet. It can work with a microcontroller like the Arduino or it can be programmed to work on its own. The Internet of Things (IoT) has just been made a whole lot cheaper and easier! The ESP8266 comes with factory-installed firmware allowing you to control it with standard “AT commands”. You can also easily create and upload your own code and this makes it hugely powerful and flexible. We’ll be replacing the firmware with our own code. In another instructable: The Simple Guide to Flashing Your ESP8266 Firmware I show you how to revert it back to an updated factory version. If you'll only be programming the ESP8266 with your own code - as we will be doing in this demo - then you don't need factory firmware. Your code is the firmware. We'll be using the Arduino IDE as a p...