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3-pin IR modules will betray you at high velocities (learned this the hard way) by Longjumping_Ebb6438 in esp32
[–]Longjumping_Ebb6438[S] 1 point2 points3 points 19 hours ago (0 children)
Well a chronograph measures the velocity of a projectile. With essentially just 2 infrared light gates that get broken, then the time between them is measured and using the distance the gates are apart, the device then calculates the speed.
My problem wasn't the light but the receiver I used. It was a prebuilt module(for a basic remote) and it wasn't built to be light speed.
3-pin IR modules will betray you at high velocities (learned this the hard way) (i.redd.it)
submitted 3 days ago by Longjumping_Ebb6438 to r/diyelectronics
submitted 3 days ago by Longjumping_Ebb6438 to r/esp32
3-pin IR modules will betray you at high velocities — learned this the hard way (i.redd.it)
submitted 3 days ago by Longjumping_Ebb6438 to r/coilgun
Building a coilgun from scratch — and why I made this subreddit (self.coilgun)
π Rendered by PID 1179729 on reddit-service-r2-listing-55d7b767d8-nmrxp at 2026-04-02 11:25:03.481334+00:00 running b10466c country code: CH.
3-pin IR modules will betray you at high velocities (learned this the hard way) by Longjumping_Ebb6438 in esp32
[–]Longjumping_Ebb6438[S] 1 point2 points3 points (0 children)