This example of a Bluetooth-controlled car created with an Arduino UNO, a 25-gram board, can be dropped to seven grams with a Nano and even lower to five with a Nano Every in its place.

However, while the Uno is a helpful board for your beginner projects, it still has its limitations, so you can't just use it for every one ... board that started Arduino's Nano family, the Nano ...

Hardware-wise, there is an Arduino Nano Every in charge of the LDR module that reads the flashlight input and the 12 V relay that unlocks the door. Be sure to check it out it the video after the ...