In this tutorial you will learn how to use the WizFi210 – serial WiFi Shield with Arduino uno board. This low-cost wifi shield can be easily connected to your WiFi network and communicate with the Arduino uno board through the serial communication protocol. In this tutorial we will control an LED wirelessly from an Android phone/tablet app or from a computer tcp/ip terminal.
In this posting, we are introducing an example code to control the LED & read the value of variable resistor of WizFi250-EVB. Without additional MCU board, a smart phone App directly connects to WizFi250-EVB and controls GPIOs.