Original Pixhawk

FMU generations 1-3 were designed as open hardware, while FMU generations 4 and 5 provided only pinout and power supply specifications (schematics were created by individual manufacturers). In order to better ensure compatibility, FMUv6 and onward will return to a complete reference design model.

Reference Design Generations

• FMUv1: Development board (STM32F407, 128 KB RAM, 1MB flash, schematics) (no longer supported by PX4)

• FMUv2: Pixhawk (STM32F427, 168 MHz, 192 KB RAM, 1MB flash, schematics)

• FMUv3: Pixhawk variants with 2MB flash (3DR Pixhawk 2 (Solo), Hex Pixhawk 2.1, Holybro Pixfalcon, 3DR Pixhawk Mini, STM32F427, 168 MHz, 192 KB RAM, 2 MB flash, schematics)

• FMUv4: Pixracer (STM32F427, 168 MHz, 192 KB RAM, 2 MB flash,pinout)

• FMUv4 PRO: Drotek Pixhawk 3 PRO (STM32F467, 168 MHz, 384 KB RAM, 2 MB flash,pinout)

• FMUv5: final name TBD (STM32F7675, 200 MHz, 512 KB RAM, 2 MB flash,pinout)

• FMUv6: work in progress, final name TBD, variant 6s (STM32H7, 400 MHz, 2 MB RAM, 2 MB flash) and variant 6i (i.MX RT1050, 600 MHz, 512 KB RAM, external flash)

Question:

Is CUAV Pixhack Nano STM32F427 is suitable for px4?

https://www.banggood.com/fr/CUAV-Pixhack-Nano-STM32F427-Flight-Controller-Built-in-Barometer-Compass-Compatible-Ardupilot-PX4-p-1198292.html?cur_warehouse=CN

NOT SURE about that!

It is interesting that in the px4 website, they recommend PIXHACK V3 AUTOPILOT as an altenative of 3DR pixhawk

https://docs.px4.io/en/flight_controller/pixhack_v3.html