An IR transmitter/receiver pair are positioned on either side of the fan. When the blade passes in between then, the receiver shuts off a transistor connected to one of the Arduino’s external ...

You know the feeling of having just created a perfect setup for your hacker lab? Sometimes, there’s just this missing piece in the puzzle that requires you to do a small hack, and those are the ...

IR receivers are commonly used to control components in a cabinet with closed doors that obstruct the line of sight required by infrared. An IR sensor is located near the TV and wired to the ...