I’m back with another question haha. So, I have swapped the ESC in this Hexacopter being built and am running into an issue where the ESC being used will not arm (acting like there is no signal) which I believe to be an issue with how the pixhawk and ESC communicate. The ESC are Flier 500A 22S I have reached out to the Flier to see what type of protocol they are using but I believe they are PWM and not Dshot… Has anyone had an issue with Flier ESC’s before and connecting to pixhawk? Any suggestions or literature to read would be greatly appreciated! I have made sure all the connections are correct from the ESC to pixhawk and receiver.
Never heard of Flier ESC’s here or anywhere else but I’m certain it’s PWM only. So just set MOT_PWM_TYPE to 0 (PWM) . Post your parameter file, we can often diagnose simple problems from that.
From the Download page there is a link for the ESC Programming software.
its possible the escs have low resistance protection resistors that require more driving current than a pixhawk can give. you could try a 3.3v-5v logic level shifter to boost the pixhawk pwm voltage.
True opto ESCs of old actually needed a 5v supply which would be provided by the reciever. Have you got a BEC connected to the + and 0v pins of the servo rail? Those pins are common across all servo outputs on the flight controller.