4 ms·
I have an idea to test, but I don't have the kind of electronics background to construct the necessary rig affordably. Or possibly to identify it if one exists
by chowells 8y ago
I have an idea to test, but I don't have the kind of electronics background to construct the necessary rig affordably. Or possibly to identify it if one exists already.
Here's my thought: connect a laser to a high frequency switch, similar to what you'd find in a PWM controller. Then rig the laser to move such that the beam traces a small circle relatively rapidly. Set up in a dark room, and play with the switching speed until you can no longer distinguish individual spots/blurs as it traces the pattern on a wall. Based in my experience with a 144Hz monitor, I'm betting that if it was moving fast enough, I'd still be able to tell the difference at 500Hz, anyway. Possibly a lot higher. I'd be fascinated to get empirical results back. Especially if they proved me wrong.
- StavrosK 8y agoYou could probably easily build a rig like that with a laser pointer and two servos, you don't need an extensive electronics background. The sample code put there would get you pretty far.
- londons_explore 8y agoServos that can move something at 500Hz are hard to come by... Galvanometers are the normal way to do that, but they are quite expensive and not a normal part of the hobby electronics repertoire.