I was wandering who my WiFi signal spread across my home. So I build a device that display the signal strength using Arduino + WiFi and LCD display.
I know that there are apps for that, but this is more fun. After long internet search for the correct I2C LCD library using this fdebrabander library: 20X04LCD_Librery. The program will connect to home network and display signal quality on LCD screen after connection.
* Don't forget to change network name and password.
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