If you build or repair FPV drones long enough, you will eventually run into a noisy quad, hot electronics, random video interference, or a build that feels harder to tune than it should. In many of those cases, one small and cheap part helps more than people expect: the capacitor.<\/p>\n\n\n\n
Here is the short answer first:<\/p>\n\n\n\n
If you want the practical answer from a real FPV pilot: I would add a capacitor to almost every 5-inch or larger quad, and I would strongly consider one on any build that runs 4S, 6S, larger motors, or a power-hungry digital system.<\/p>\n\n\n\n