Are there PRACTICAL/ Real World performance differences between Flight Controllers using the FMUv3 versus FMUv5 boards? Should I wait for the FMUv7 boards? Spec sheets show notable spec bumps with FMUv5. Here’s the dilemma. I want to put a Pixhawk/hack system on my fly-barred electric 450-sized heli. Space and weight are major considerations. Known contenders are Pixhack V3x, Pixhawk 4 Mini and Pixhack V5 Nano. I’d consider unknown contenders …but the TRADITIONAL HELI collective published knowledge on the smaller units like the Pixracer (https://docs.px4.io/v1.9.0/en/flight_controller/pixracer.html) is so limited…I’m reluctant to go that route. Here is what I have so far… PLEASE add to it to help with decision making:
Pixhack V3x
Pros
- Highly recommended by experienced pilots on this forum
- Internal damping will probably allow mounting without shock absorbent tray
- Has been on the market a while / proven track record.
Cons
- HEAVIEST of the group and largest dimensions
- Older FMUv3 tech – probably not something to be concerned with…but ???
Pixhawk 4 Mini
Pros
- Readily available at great prices
- Lightweight & smallest dimensions
- Newer FMUv5 based technology
- Construction LOOKS like its internally dampened…but literature doesn’t say one way or the other. If dampened - might not need shock absorbent mounting tray.
Cons
- No heli pilots have spoken up about this unit – Pro or con
Pixhack V5 Nano (https://docs.px4.io/master/en/flight_controller/cuav_v5_nano.html)
Pros
- Small & Lightweight
- Newer FMUv5 based technology
Cons
- Very proprietary connectors and GPS requirements
- New and Unproven
- Not dampened & would likely need shock absorbent mounting tray.
Pixracer/Mind Racer/Kakute F7 and similar small form factor FMU’s
https://docs.px4.io/master/en/flight_controller/mindracer.html
NO DATA from Traditional Heli pilots H E L P**
Biggest PRO is these have the smallest form factor and lightest weight.
Please chime in with your experiences. Thank you in advance.
