APM 2.5.2 APM Flight Controller Board with GPS For Multi-rotor Fixed-w

Description

-No more shield/daughterboard: magnetometer and dataflash were moved to the main board, making it easier to assemble, repair and hack.
-No more on-board GPS, but we added a new *-pins DF*3 connector for our new GPS cable standard (PX4) and kept the old but reliable Molex (EM***6) connector for old GPS compatibility.
-The old radio-modem connector is gone and now is being replaced by our new *-pins DF*3 connector (like the GPS, because both are UART’s. Got it?), this will make it compatible with PX4 and prevents users from blowing up the UART mux.
-We added a second protection fuse and diode (you are no longer required to solder it yourself) for extra reverse polarity and short circuit protection.
-The old I2C connector is gone and has been replaced by our new *-pins DF*3 connector (yeah PX4 compatible. Oh wait correction… None of both (PX4 & APM2.5) are compatible with each other, we created this standard together as a team, but I have to give the average of the credits to PX4).
-Added a “mystery” *-pin DF*3 Connector that will be used later. I know you like surprises so please stay tuned. No big deal but is really cool and will save you some soldering here and there.
-Added “Magnetometer Jumper” that allows you to disable the on-board magnetometer, so you can attach an external one.
-Added extra LED attached to the PPM encoder (Atmega**-U2) on pin PC7. This will allows us later to use it as PPM status indication and leave those poor TX/RX LED’s do their intended job.