//#define CONFIG_SONAR DISABLED // disable sonar to save 1k of flash
//#define HYBRID_ENABLED DISABLED // disable hybrid flight mode to save 4.5k of flash
// features below are disabled by default
//#define OPTFLOW ENABLED // enable optical flow sensor and OF_LOITER flight mode at a cost of 5K of flash space
// features below are disabled by default on APM (but enabled on Pixhawk)
//#define AC_RALLY ENABLED // disable rally points to save 2k of flash, and also frees rally point EEPROM for more mission commands
//#define PARACHUTE ENABLED // enable parachute release at a cost of 1k of flash
// features below are disabled by default on all boards
//#define OPTFLOW ENABLED // enable optical flow sensor and OF_LOITER flight mode at a cost of 5K of flash space
//#define SPRAYER ENABLED // enable the crop sprayer feature (two ESC controlled pumps the speed of which depends upon the vehicle's horizontal velocity)