APM 2.8 Multicopter Flight Controller is an upgraded version of 2.5; 2.6 with a Built-in Compass for FPV RC Drone Aircraft is the new APM (Ardupilot Mega) 2.8, flight controller. The sensors are exactly the same as the APM 2.6 flight controller, however, this has the option to use the built-in compass, or an external compass via a jumper. This makes the APM 2.8 ideal for use with multi-copters and rovers.

This revision of the board has an optional onboard compass, which is designed for vehicles (especially multi-copters and rovers) where the compass should be placed as far from power and motor sources as possible to avoid magnetic interference. (On fixed-wing aircraft it is often easier to mount APM far enough away from the motors and ESCs to avoid magnetic interference, so this is not as critical, but APM 2.8 gives more flexibility in that positioning and is a good choice for them, too). This is designed to be used with the 3DR uBlox GPS with Compass so that the GPS/Compass unit can be mounted further from noise sources than APM itself.

Powerful control software features:

The downloadable mission planner software is used to configure and control your Ardupilot board:

1. Point-and-click waypoint entry, using Google Maps.
2. Select mission commands from drop-down menus.
3. Download mission logs files and analyze them.
4. Configure APM settings for your airframe.
5. Interface with a PC flight simulator to create a full hardware-in-the-loop UAV simulator.
6. See the output from APM serial terminal.

Features :

1. Straight Needle
2. Arduino Compatible!
3. Onboard 4 MegaByte Dataflash chip for automatic data logging.
4. Optional off-board GPS, auBlox LEA-6H module with Compass.
5. One of the first open-source autopilot systems to use Invensenses 6 DoF Accelerometer/Gyro MPU-6000.
6. Barometric pressure sensor upgraded to MS5611-01BA03, from Measurement Specialties.
7. Atmels ATMEGA2560 and ATMEGA32U-2 chips for processing and USB functions respectively.

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