To be specific, it isn't an Arduino brand, it is a DigiSpark, but the trouble isn't with the device itself. The problem is with a buzzer. I got the Velleman svm06. It says it is rated at 3-7VDC ...

[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 ...

Eric Rogers] is a radar-systems engineer who just happens ... From there, the base unit can be controlled by the Arduino via an RS232 interface. There are some bugs in the system right now.