RFID access system using ESP8266-01 (part 1)

ESP8266 closeup
[This post by SHH&M member Steve]

During the early discussions about our new space at Portland Works we decided it would be good to have an RfID access system, and that this would communicate with a server over the network. This immediately sparked my interest as I had recently taken delivery of some new modules that I had been dying to have a play with, the ESP8266-01.

The ESP8266 is a chip that enables wifi access, with communication over a simple UART (serial) connection. The main selling point of this chip is that it is very low cost compared to other Wifi solutions, typically £2-3 per module. Another huge advantage is its ability to act as a standalone microcontroller – more on that later…. Continue reading