The Arduino Nano Every is faster, cheaper, and has more memory than it's predecessor, but what is it, and what can you use it for?

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 ...

While relatively old, the Arduino Nano is still priced at $24.90, which is a significant price leap from the more recent and more affordable Nano Every that you can get for $13.70.

The combination of a transparent OLED display, Arduino Nano Every microcontroller, HC-05 Bluetooth module, and a small LiPo battery results in a functional and versatile piece of wearable technology.