Which Flight Controller should I choose?

ArduPlane
1

I need suggestions on which flight controller to choose.
So basically im building a fixed wing UAV which gonna have 2 missions to do:
First mission is to fly autonomously between two poles like drawing an infinity symbol.
Second mission is to drop 2 loads on two different areas. These are gonna be red, square shaped areas with 2x2meters and 4x4meters dimensions on the gorund. The UAV is gonna detect these square and drop 1 load to each.
I will be using raspberry pi 4 8GB for image processing part and i was thinking of using pixhawk 6C as a flight controller. For the competition that im gonna take part i should meet the reqiurement of “minimum cost, maximum efficiency”. So im just not sure if any other flight controllers like pixhawk 4 or Mateksys F765-wing or any other FC would be enough for this project.

So which flight controller should i go with?

The UAV is roughly gonna have this look

WhatsApp Image 2025-02-09 at 21.42.46
WhatsApp Image 2025-02-09 at 21.42.46779Ă—556 37.5 KB

2

Those are both EOL. Don’t limit yourself, use an H7 based Flight Controller like the Pixhawk 6C you mentioned. There is a mini version of that also. There are many other H7 based flight controllers that will suit.

3

What about the GPS. Do you think M8N gps would be precise enough for these missions?

4

F405 based FC and an 250-class M10 GPS + compass, 250 is the size of the ceramic antenna 25x25mm.

There is no reason to select an F7 or H7 FC for a traditional plane, especially if the heavy lifting is done by a companion computer.

5

Maybe if scripts are needed to complete the tasks … Today I would use a Matek H743-WLITE, which should last for some time.

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6

Actually im still in the beginning of the project and idk if the drop mechanism should be controlled by raspberry or FC

7

You don’t need a RPI to run a drop system. At it’s most basic it can be done in a mission plan, but if you want to get fancy and maybe take in some variables then Lua scripts could also be a viable solution. To run Lua you’d need an H7 board (the H743-Wlite is a good suggestion), but if you decide to just go with mission plans F405 will do the trick.

1 Like