Arduino for Nerf Chronograph and Shot Counter

Arduino for Nerf: Chronograph and Shot Counter

My previous Instructable covered the basics of detecting dart speed using an infrared emitter and detector. This project takes it a step further, using a printed circuit board, display, and batteries to make a portable ammo counter and chronograph. Additionally, we add some LEDs to simulate muzzle flash. Because, pew pew pew . . . […]

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