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 ...

The protocol is supported on all Arduino boards, including the latest Arduino Nano Every model. The I2C protocol only requires two wires to connect external devices. One wire (called serial data ...

To solve at least part of that one, [Jeremy] turned to using an Arduino to build a drum module on his own, but he still had to solve yet a third problem: how to make the Arduino fast enough for ...