Newbie here hoping for help. Build is complete as is calibration of most parts using mission planner with pixhawk px.4 and Spektrum m dx7s. Problem is when trying to connect battery with receiving ver and esc. All is ok until trying to start up where an error appears "Failed to get rally point". Unit will not arm but lights on pixhawk appear ready to arm.
Thanks for any help.
Thanks for any help.