Has FlytOS the capability to send PWM signal over AUX outs? For example, to deploy or retract landing gears programmatically. XU4’s GPIO pins do not support PWM output. So I need to buy a PWM driver.
AFAIK neither px4 nor apm expose controlling aux output via mavlink. If you can write your custom code on Pixhawk, we can provide APIs that would provide you control over aux.
In case you get any link wherein either px4 or apm extends aux port control over mavlink. I would be more than eager to write APIs for it.