ESP-01S USB to ESP8266 ESP-01S Wireless Wifi Adapter Module Wi-Fi CH340G 4.5-5.5V, 115200 Baud Rate

Recently there has been quite a hype about this ESP8266 WiFi serial module on Hack A Day And it is totally reasonable I mean, just 5 dollars for WiFi module, which works easily with let's say Arduino is way cheaper than an Arduino yun, or other WiFi shields So I went ahead and bought 3 of those quite a while ago And today, I will show you what they are, what they can do, and how to handle them properly Let's get started! (*Electronic Music) Firstly, let's talk about the board itself As you can see, mine has a small antenna on the PCB