arduino uno Arduino Uno R3

[madiha khan]

I am working on an Arduino Uno R3 which i had bought from http://www.w11stop.com/ard-uino . I wanted to have the ability of controlling the Arduino wirelessly, like stopping the Arduino without having to pull the power-plug every time. Is it possible?

[Larry Standage]

Depends on what you mean by "stopping the Arduino", and "wirelessly".

If, by stopping the Arduino, you want to be able to control whether or not it runs, there should be options in the language for putting the part to sleep and waking on some event.

With wireless, there are various shields that support WiFi, Bluetooth, LoRa, and probably other standards. So how are you wanting to communicate with it?

[Notarobot]

It is possible to put Arduino to sleep that is very low power consumption mode for a period of time. Periodicity of this mode is determined by the Watchdog timer. When waken the Arduino will check communication and do whatever it is programmed to do and then go to sleep. If you make very low duty cycle the average consumption will be also very low. In my recollection not all processors have such capability. You will need to check the datasheet. All information for this kind of use case is available on Internet.