Controlling home electrical appliances using the Blynk app does not eliminate or alter the presence of electric current in the wiring or circuits. The Blynk app serves as a remote control interface that allows you to send commands or instructions to your appliances via an internet connection. However, the physical electrical circuits and wiring that power the appliances still carry electric current.
When you use the Blynk app to control an appliance, such as turning it on or off, the app sends a signal to a device connected to your appliance, such as an Arduino or Raspberry Pi, which acts as an intermediary. This device then communicates with the appliance to execute the desired action.
It's important to note that while you may not physically interact with the appliance's switch or control panel, the electrical circuits connected to the appliance are still energized and carry current. Therefore, it's crucial to ensure proper electrical safety measures when dealing with home electrical systems, regardless of whether you control them through an app or traditional physical switches.