Figure an Arduino most matches the "Other" category ... You could verify this with a DMM: Connect the buzzer to a DC supply with the DMM in series, set to a current range. Trying to directly ...

He uses telephone wire to connect each buzzer to the base unit ... The base unit houses an Arduino board which polls the buttons to see which is pressed first. The LED on the appropriate buzzer ...

So, let’s start by watching this 7 minutes video to see the entire system in action: The resetAlarm integer is the Arduino pin where we connect the button that is used the reset the alarm. The relay ...

[Flute Systems] has released an open source DIY game buzzer system based on the Arduino that will help instantly elevate your game. Certainly beats just yelling across the room. The design has ...