"I had a similar problem and could not solve it using the steps indicated.  One motor was the problem.  I purchased an additional esc and got everything to work properly.  You may try that."

"There are two ways to attach the mag to the APM/IMU.  One is to use a modified GPS cable and connect to the i2c port.  The other is to solder it directly to the board.  The instructions are found on the…"

"Norf is flying his hexa on the ArduPirates code.  Here is a video of his initial flight.  I think that the arms of the Arducopter are too light weight for heavy lifting.  There are plenty of hexa frame options available or you can…"

" You did not indicate what esc's that you are using.  I had the same problem until I switched from Turnegy to the OEM m2m.  It solved the problem for me. "

"I have this exact same setup and have had no problems. I did calibrate all my escs individually by connecting them directly to the reciever when I first assembled the kit. When I loaded the RC2 code I reset the eeprom and recalibrated the escs using…"

"iPhone 4? :D is your copter leveled? calibrate the acceleromters (CLI)   you can set min throttle in CLI, too"

"Actually iPhone.  Sometimes it works well others not so good.  I soldered the pin and it worked!  I had to reverse the rudder channel.  Two small issues:  Three of the motors run when armed, the forth does not until it gets…"

"yes, it's the SW1 pin, it should work when soldered"

"Sebastian:   Since I did not build this board and was told it was tested prior to shipment, I have not looked at it closely.  I got out my magnification lens and fount that one of the pins behind the A led and in front of SW1 was not…"

"what you posted is the Log output which is send when SW1 is pressed maybe you got a short somewhere so it thinks you are pressing SW1"

"I am using RC2/NG.  This is the real, unmodified output.  The blue led is back left looking toward the front.  I am not sure how to use the examples to read the RC channels.  I am willing to do it, if you could walk me through…"

"Ok umm what software you are using on your APM?!? And is this real and unmodified output of it?   For example, I never seen that it writes SENSOR: text on beginning of line. Also like you said, they look similar and it should not look like…"

"Here is what I am getting with sending…"

"Yes commands are in CAPITAL. This applies only for NG code and you use following commands to find out different things:   S - All generic flight information, angles, motor commands  (Order: timer, adc1, adc2, adc3, thr, roll, pitch, yaw,…"

"Thanks, that means that the other problem that I am having, can't arm motors, is also preventing me from switching to GPS hold."

"I assume that you cannot switch to GPS hold until the motors are armed.  Is that correct?"