That is why you must use an external power supply (Vcc) that is between 7 to 12 volts to power up the Arduino board and the transistor + relay. The load uses its own power supply, for instance if you ...

At points I might do something that might be dangerous because I'm comfortable with some tools or techniques but please ...

It’s a fairly simple project, too: just hook an Arduino Uno up to a motion sensor and an electronic switch called a relay, then plug in your fan, and you’re good to go. If that sounds ...

Raspberry Pi enthusiasts wanting to connect their projects to the Arduino Cloud using Python ... enables users to control relays, monitor digital inputs, and visualize real-time and historical ...

Arduino Uno microcontroller Custom shield with relays, transistors ... you’ll need to program the Arduino Uno. Connect the Arduino to your laptop via USB and use Visual Studio Code with the ...