When I connect the battery to my flight controller and enter mission planner , it displays the message “prearm board (1.3v) out of range 4.3-5.8v ,” even though my battery is fully charged and update new firmware
Board voltage isn’t monitored on that board. What version of firmware did you flash?
Showing a picture from manufacturer or supplier is nice.
Showing your setup, parameter and log file can help.
Thanks for your response
My old firmware still shows the same thing even after upgraded to the new firmware.
firmware stable-4.5.7 kakute h7 wing