This is very simple project to turn on/off a lamp wireless from smart phone. WizFi250 is used for the WiFi connectivity and controlling the lamp. Arduino Uno controls the commands transmitted from phone or tablet via Wi-Fi in the form of UDP or TCP.
The scheme is simple, it may be the only trick – to use 1k resistor (R3) of the inverter output 5V – & gt; 3, 3B. When using a resistor with higher ratings scheme is not working properly, vsyazano is the fact that at one point there are two choices: FTDI FT232 chips and our homemade. Not good, but the layout is quite acceptable.
If you go to the bashny.net, you can see more detail.