| Key Features | - Arduino Compatible!, Side entry pins, Includes 3-axis gyro, accelerometer and high-performance barometer, Onboard 4 MegaByte Dataflash chip for automatic datalogging, One of the first open-source autopilot systems to use Invensense's 6 DoF Accelerometer/Gyro MPU-6000, Barometric pressure sensor upgraded to MS5611-01BA03, from Measurement Specialties, Atmel's ATMEGA2560 and ATMEGA32U-2 chips for processing and usb functions respectively, Point-and-click programming/configuration gets you up and operating without hassle, Multiple command modes: Acro, Stabilize, Loiter, Alt-hold, Return To Launchpoint, Land, Simple, Guided, Position, Circle, Follow Me, GeoFence, and Auto (which runs fully scripted missions using GPS waypoints), Failsafe programming options bring peace of mind in the event of lost control signal or low battery conditions, Three Axis camera control and stabilization, shutter control, live video link with programmable on-screen-display, Data transceivers allow real-time telemetry and control between your ground station computer and APM, including joystick control options, Full data logging provides comprehensive post mission analysis, with graphing and Google Earth mapping tools, No dead ends — Advanced users will find endless options for customization and expanded mission capabilities, The interface is changed from 1.0mm 6P SM06B GPS to DF13-4P I2C external compass interface, put DF13- 5P GPS interface with external compass interface, The I2C interface has been changed to multifunctional MUX interface, users can configurate the interface like UARTO, UART2, I2C, OSD, default OSD interface, 2.8 ADOPTS LP2985-3.3, the voltage reaches 16V,increase the reliability, reduce the voltage problem probability of Bad Gyro health, 2.8 uses jumper cap to choose, find the MAG pins on board, pluging in jumper cap is built in compass, taking off jumper cap is external compass, V2.5 just added gigh frequency component of the filter circuit which made of 0.1uF to filter the high frequency interference,the board does not have a large capacity of capacitor use to filter the low frequency component of the ripple,2.8 Added a 47 uf tantalum capacitor, improve APM on-board chip, the stability of the power supply.
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