I have just bought a Pixhawk 4 and the full size power management board and I am knocking my head against the wall trying to make sure I wire it correctly before I power anything up. I think I am 95% there, but don’t want to take the white smoke out of something. (Every machine is a smoke machine if you operate it wrong enough)
I am trying to set up a rover first, but eventually will use this for a fixed wing plane. I am using Mission Planner for the first time along with a Dragon Link for control and telemetry. I think I have most everything connected correctly except for the servo and motor. I have followed the pixhawk connection guide here and have
‘Power 1’ on Pixhawk connected to ‘PWR1’ on the PMB
‘Telem1’ and ‘SBUS RC’ connected to dragon link receiver
I also have ‘FMU-PWM OUT’ on pixhawk connected to ‘FMU-PWM IN’ on the PMB, as I think that is correct as I just need 1 servo and 1 brushless motor through an ESC, but I am not sure if I need to be using the I/O PWM-IN instead? The airframes reference guide here says for a rover the specific outputs are
Does that mean I will simply connect the servo and ESC to pins 2 and 4 on the FMU-PWM out? Or something else entirely?
Also related but maybe not the same question, I know my servo needs 6.6v somewhere. My ESC is supplying the 6.6V via BEC, but I also know the ‘FMU-PWM OUT’ does not provide power. Are all the power pins on the ‘FMU-PWM OUT’ rail interconnected together so that if I connect the servo and ESC there, my servo will be powered?
Here is a picture for reference to what I have now. Any help or advice is appreciated. I don’t want to burn something up the first time I turn it on.