Sometimes you need to display a number nice and large, making it easily readable at a good distance. [Lewis] has just the thing for that: a big expandable 7-segment display. The build is modular, a… ...

Posted in Misc Hacks Tagged 7 segment, 74hc165, arduino, AS3144, duodecimal, hall effect, hexadecimal, seven segment ← Garage Door Opener Ejection Seat ...

With each contact you make, the red LED lights up, the buzzer beeps and the seven-segment LED display counts up. After making contact ten times, the buzzer blares out an annoying sound — game over.