"Hi Guys! I'm having the same problem as you! The Uart0/2 stopped sending data to my xbee! I haven't tried the UART0 solo... If that does not work do you have other solutions? I'm also having some sort of problem when loading a new…"

"Hi Ahmed! did you flip any switch in your board? like a master to slave switch? those have tendency to reversing the TX and RX!"

"OK, it worked again via the hardwired UART0 only. and by reversing the TX and RX>>>>>>>>>>> WTH ?!"

"OK, after i was able to establish a link via the hardwired UART0 port, now i just can't. I wonder WHY. it was able to fetch parameters then eventually fail due to (link isn't fast enogh), but i thought it would work using full battery…"

"Nope, I used an UNO shield at the PC end and this at the APM2.0 end: http://store.fut-electronics.com/Zig-11SHD006.html ;"

"Did you get your board from 3DR? "

"THANK YOU VERY MUCH; u saved me from another desperate night trying to figure out the problem !! I wonder why they made the telemetry port in the first place !!"

"I have all ways said, since the 'lost' drone in Iran, jammed or spoofed you need to deal with loss of gps. A simple dead reckoning reality check with gps should detect spoofing. I find it hard to believe…"

"Sensationalism at its best. Why mess with a John Dear combine with auto steer and get the farming community in an up roar? "

"What about solar storms ;-)"

"In order to get rid of such GPS spoofing, with accurate Dead Reckoning, an algorithm in the code can be implemented so that, the autopilot does not use the GPS signal for that period of time during which it observes sudden appreciable…"

"In reality, the hacking will be way much more complicated due to encryption and etc. Also, I posted this about a week ago:http://diydrones.com/profiles/blogs/drones-vulnerable-to-terrorist-hijacking-researchers-say"

"In my current build I’m using external RESET switch and UART0 from the right side of APM2 board, the new APM2 case does not have window for those connections ! I will have to modify the case before using it."

"You will need gyroscope to detect rotation and accelerometer to detect acceleration; with the two sensors working together you will be able to track your vehicle movement. APM2 has the following sensors built in it: Digital compass 3 Axis…"

"I agree, this should be the right picture: "

"I like the SUAS article better.  The choice of pictures make it sound like they hacked a predator when they actually hacked a small…"

"Yes I did the auto trim, but from your question about expo throttle I guess you set your radio on “Helicopter” mode which might do preconfigured mix between channels. You can try monitoring your radio raw signal using APM Planner…"

"Actually i am trying to do the same hovering test, but when i try to fly the Arducopter Hexa APM1 v2.6, in Stabilize mode, it moves in the backward direction instead of lifting and landing at the same…"

"Hi Umer I fly using linear throttle and the PID is the default ones."