Bullet Speed Meter, Homemade Chronograph

High quality PCB prototypes: 3D CNC service: I wanted to measure the speed of my coilgun projectile. This device will use light and sensors to measure the muzzle speed of a bullet. It has a 3D printed body, works with Arduino and is easy to make. LINKS Full guide links: Part List: Schematic: 3D STL Files: Code: Occupy mars TShirt: SUPPORT Join my Arduino Course (Spanish): Donate on PayPal: Help my projects on Patreon :