3 ms·
There were a bunch of people experimenting with using RaspberryPis for low latency drone FPV video. Turns out for some use cases WiFi in it's standard config is
by bigiain 6y ago
There were a bunch of people experimenting with using RaspberryPis for low latency drone FPV video. Turns out for some use cases WiFi in it's standard config is a big part of the "getting below a few hundred milliseconds latency" problem. (Note: trying for low latency on 1080p video is making life harder for yourself too. If you don't _need_ 2 megapixel frames, go smaller. 720 or 600 lines might be fine. Drone FPV often uses 525 line analog video.)
I've got a setup I built based on this: https://befinitiv.wordpress.com/wifibroadcast-analog-like-transmission-of-live-video-data/ https://befinitiv.wordpress.com/wifibroadcast-analog-like-tr... that's well below 100ms if latency. It's still not as good as analog video for fast drones though.
These days most drone people just blow money on the new-ish DJI digital video stuff (which works on non-DJI drones). It's pretty spectacular, but it's over a grand (in AUD) worth of gear so for now I'm sticking with my old analog video gear.