I want to build a chronograph for measuring velocities of rifle projectiles. I initially wanted to use optical sensors, but these are fragile to light disturbances etc so I want to go for Hall effect sensors instead. To detect bullets moving at 900 m/s (~3000 ft/sec) you would obviously need a sens…

Hall effect sensors to detect high velocity projectiles

wvmarle October 20, 2017, 2:48am 6

You're probably looking to build something like this:

Anyone knows how they work?

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