Too little free memory to start the QuadPlane code

What ArduPilot says:

• Config Error: Not enough memory for quadplane

When Q_ENABLE is set, ArduPilot creates the lift-motor mixer, the attitude and position controllers and the waypoint and loiter navigation in RAM. Before doing so it checks that enough is free for all of them plus 4 kB, and it was not. This is a “Config Error”: it repeats every 5 s and the board does nothing else.

What to do, most likely first

1. Other features have taken the memory: Lua scripting, terrain data, many extra drivers.

   CheckThe ground station shows the free memory. SCR_ENABLE with a large SCR_HEAP_SIZE is the usual big consumer.

   FixSwitch off what the aircraft does not use (SCR_ENABLE, TERRAIN_ENABLE) or lower SCR_HEAP_SIZE, and reboot.

2. The flight controller has too little RAM for a QuadPlane.

   FixUse a board with more memory (an H7 board), or a firmware built without the features you do not need.

Parameters to look at

Where to do it:Firmware InspectorFirmware Builder