Measuring 25mm x 15mm, this tiny board pack quite a punch in terms of features. Made by espressif, this device have become very popular with engineers and hobbyist all over the world.
There are many varieties of the ESP8266, I bought the cheapest of the lot for only $3.08 each from ebay with free shipping.
Received the ESP-01 after about 2 weeks wait and I eagerly tested it by loading nodemcu on to it and runing the code below, it logged on to my AP with ease.
ip = wifi.sta.getip() print(ip) --nil wifi.setmode(wifi.STATION) wifi.sta.config("SSID","password") ip = wifi.sta.getip() print(ip) --192.168.1.128