Arduino Library for ESP32 to control TP Link Kasa Smart Plug (Local Network mode)

This library will allow ESP32 to scan the TP Link Kasa smart plug and Light Switch on the local network. You can control the TP Link Smart Plugs and Light Switches. Please make sure you ESP32 is on the same WIFI network as your TP Link Smart Plug devices.

So far I tested the library with TP Link Smart Plug model HS103(US) and HS200(US).

Dependencie

This library requires ArduinoJson by Benoit Blanchon. https://arduinojson.org/?utm_source=meta&utm_medium=library.properties Please make sure you install ArduinoJson to your Arduino IDE.

Example: Scan local network for TP Link Kasa Smart Plug devices and print out the device details.

    #include <WiFi.h>
    #include "KasaSmartPlug.h"
    
    const char *ssid = "your wifi ssid";
    const char *password = "your wifi password";
    
    KASAUtil kasaUtil;
    
    void setup()
    {
     int found;
     Serial.begin(115200);

     // connect to WiFi
     Serial.printf("Connecting to %s ", ssid);
     WiFi.begin(ssid, password);
     while (WiFi.status() != WL_CONNECTED)
     {
       delay(500);
       Serial.print(".");
     }
     Serial.println(" CONNECTED");

     found = kasaUtil.ScanDevices();
     Serial.printf("\r\n Found device = %d", found);

     // Print out devices name and ip address found..
     for (int i = 0; i < found; i++)
     {
       KASASmartPlug *p = kasaUtil.GetSmartPlugByIndex(i);
       Serial.printf("\r\n %d. %s IP: %s Relay: %d", i, p->alias, p->ip_address, p->state);  
     } 
    }
    

Example: Turn on the smart plug and read feedback

//Get the Smart Plug object by using its alias name. 
//Please note the kasaUtil.ScanDevices() need to be called.
KASASmartPlug *testPlug = kasaUtil.GetSmartPlug("Kasa Device Alias Name");

//Turn ON the plug
testPlug->SetRelayState(1);

//Turn OFF the plug
testPlug->SetRelayState(0);

//Read the plug infomation and relay state
testPlug->QueryInfo();

Credit

Thanks for the infomation from https://www.softscheck.com/en/reverse-engineering-tp-link-hs110/ without this, it will be impossible for me to complete this library.

Very well written library ArduinoJson by Benoit Blanchon. https://arduinojson.org/?utm_source=meta&utm_medium=library.properties

Tutorial Video

https://www.youtube.com/watch?v=N5J3weD0vPg&ab_channel=KRIS-%E0%B8%99%E0%B8%B2%E0%B8%A2%E0%B8%81%E0%B8%B4%E0%B8%94%E0%B8%8B%E0%B8%AD%E0%B8%A2.14