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Digital FPV video for drone racing

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TheDane:

--- Quote from: hexahedron on January 20, 2019, 06:28:44 pm ---Need I say more?

--- End quote ---

5.8 GHz
https://en.wikipedia.org/wiki/List_of_WLAN_channels#5_GHz_(802.11a/h/j/n/ac/ax)

Pick and choose your channel(s) - it is ISM.
Talk with the organizers, if they do not understand technology progress - and yes, 2.4GHz is crowded, and not suitable for such things

Edit - More detail; (Pick and choose - it is ISM.)

TheDane:

--- Quote from: hexahedron on January 20, 2019, 06:42:42 pm ---"3.2.3 VTX" (video transmitter)
"TBS UNIFY HV RACE"
"IRC TRAMP HV (with or without NFC board)"

Now, from that information, I hope we can all conclude that any video transmitter other than the 2 listed is out of the question.

--- End quote ---

3.1.4 Exempted Components:
There are NO spec requirements on the following components:

Flight Controller (Example: Motolabs Cyclone, Revolt)
Flight Controller Software (Example: RaceFlight,BetaFlight)
TX (Example: X4R, Crossfire)
Radio (Example: Taranis, DX8)
Camera (Example: Runcam, Foxeer)

Flight Controller - an additional SBC, raspberry pi zero? (it says COMPONENTS)
TX/Radio - 5.8GHz WiFi Dongle

So, do you need to be limited by what is NOT allowed more than 1 unit of?

ogden:

--- Quote from: hexahedron on January 20, 2019, 06:28:44 pm ---As you can see in this image, out of the 14 wifi bands available, only 4 do not overlap

--- End quote ---

5.8Ghz WiFi have way more non-overlapping 20MHz channels. Obviously 2.4 GHz is too overcrowded, it's not even worth to waste time talking about it. Also using Atheros chipset does not necessarily mean that you shall use all it's features, implement "WiFi as it is".

Kilrah:

--- Quote from: TheDane on January 20, 2019, 04:00:30 pm ---50 [km/hr] = 50.000/3600 [m/s] = 13.89 [m/s] - breakneck drone speed?

--- End quote ---
You can multiply that by 3. But it's not straight line speed that matters, that's a piece of cake. It's feedback in fast maneuvers you do when dodging obstacles.


--- Quote from: ogden on January 20, 2019, 05:00:58 pm ---Why would anyone shall [digitally] transmit on frequencies allocated for analog video!
--- End quote ---
These analog video transmitters send in the ISM band in the middle of everything (where most stuff is digital, and where digital stuff is allowed 10x more power!), they don't have reserved bands.


--- Quote from: hexahedron on January 20, 2019, 06:42:42 pm ---"When constructing your MultiGP Spec Class Racer, you may pick one (1) component from each of the following categories:"

"3.2.3 VTX" (video transmitter)
"TBS UNIFY HV RACE"
"IRC TRAMP HV (with or without NFC board)"

Now, from that information, I hope we can all conclude that any video transmitter other than the 2 listed is out of the question.

--- End quote ---

For the OP's initial idea yes, but I can assure you that if you can make a better system that is compliant with the RF regulations of all countries where these events take place they'll be more than happy to add your product to the list.

TheDane:

--- Quote from: Kilrah on January 20, 2019, 07:26:11 pm ---
--- Quote from: TheDane on January 20, 2019, 04:00:30 pm ---50 [km/hr] = 50.000/3600 [m/s] = 13.89 [m/s] - breakneck drone speed?

--- End quote ---
You can multiply that by 3. But it's not straight line speed that matters, that's a piece of cake. It's feedback in fast maneuvers you do when dodging obstacles.


--- End quote ---

There seems to be 2 MultiGP racing variants: Indoor and outdoor.
On the outdoor track(s), it looks like that it is more about remembering the course and when/where to turn - and then turn up the throttle to max.
The indoor track(s?) goes a lot slower, and needs to be more precise. Am I wrong?

https://www.multigp.com/leaderboards/
- lots of YouTube videos, and ample opportunity to get airsick in front of your screen :popcorn:

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