Hello friends,have you ever thought about knowing the signal strength or the limit of your wifi network in your home?
You can do it easily with the help of ESP8266.If you do not know about ESP8266 Wifi module,view my previous blog Arduino:Getting started with ESP8266 WIFI module .
To buy ESP8266 from amazon, click here..
The response of AT+CWLAP command is +CWLAP:<ecn>,<ssid>,<rssi>[,<mode>]
Here the rssi block represents the signal strength.So,in the pic above,the strength in -35dBm