(True) Unidirectional Wifi broadcasting of video data for FPV
This post shows how to broadcast data over 802.11 devices with a true unidirectional data flow. No need to be associated to a network (thus no risk of being disassociated) and no acknowledgements are sent from receiver to transmitter. Please note that this is ongoing work and just a proof of concept.
EDIT: For a complete overview, refer to this page: https://befinitiv.wordpress.com/wifibroadcast-analog-like-transmission-of-live-video-data/ ——
My plan for this spring: Fly FPV! There are already a lot devices on the market for transmitting analog video signals over 2.4GHz or 5.8GHz. But to me that always seemed a bit outdated. Of cause, several people thought that too and tried to send their video data over Wifi. A good example for doing so: https://sparkyflight.wordpress.com/2014/02/22/raspberry-pi-camera-latency-testing-part-2/
“Sparky flight” took a RaspberryPi, encoded the video stream as h264 and sent it over Wifi to a PC. He was able to get a latency of down to 85ms glass-to-glass, which is quite nice! But: All Wifi solutions have the same problem: When you loose your Wifi connection, you are immediately blind. That is of cause not acceptable in a FPV setup. This is where the old analog link has a really big advantage. When you are getting out of range, the signal slowly degrades. You would have still time to react and turn your plane around.
