Any suggestion in arduino uno to connect in blynk app? and what component i can use to arduino uno to have wifi ?
you could add an ESP-01 to give WiFi capability
any particular reason to use a UNO? you have the complication of communication between the UNO and the WiFi device
Consider using a microcontroller with onboard WiFi such as the ESP8266 or ESP32 which has onboard WiFi, Bluetooth Classic 2.0 and |BLE
You can use Adafruit ATWINC1500 shield (clone of discontinued Arduino WiFi 101 shield). It works with the Arduino WiFi101 library.
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