"Check for intermittent damage caused but crashing would be my first guess."

"Try using a serial link between the RPi and the APM."

"That is why you need to systematically debug the problem. 

Sorry but that is how this stuff works.

Take care,

Robert"

"Try testing each esc + motor separately and then if they all work correctly then test the quad again. If you have the problem then retreat the esc connections on the flight controller and see if the problem follows the  swapped hardware or remains.…"

"Try the FASST7CH


Take care,

Robert"

"I went int the amp_planner project and then in src>comm are the header files you will find all of the definitions in there. Then open the project up in something like Simpletext and search for the symbol you are interested in and you can see how it…"

"Hi Paul,

Yes the Tetracam ADC is a nice piece of kit but it tends to be expensive. You are spot on about the calibration requirements.

Take care"

"Since you are over at aloft hobbies (where I got my FrSky receivers and my Taranis btw) I would get one of these:
FrSky TFR8SB - 8 Channel FASST Compatible Receiver w/ S.Bus Aloft H...
This is what I have been using but this is what I am using on…"

"The PixHawk requires a PPM or Horizon based receiver so can get one of the ppm converters but they cost almost as much as a FrSky receiver."

"I don't think you are going to get that working it uses SB v2 and the Pixhawk won't talk to it. I use one of the FrSky Futaba receivers and then put the 14SG into 8 channel model which then falls back to SB v1. Good news is that the FrSky receiver…"

"The are companies that sell already modifies GoPro cameras form NIR. The advantage of using one of these is that they are not that expensive and you have access to all of the standard GoPro gimbals and other equipment. "

"A simple test would be to put a set of the 12x45 props on the new motors and measure the difference. And yes there will be a difference. Not even looking at the difference in the motors so lets assume they are the same output per unit of energy…"

"Hi James,

From what I can see you are going to have to follow HobbyKings instructions for calibration. At this point you may want to looking into flashing the ESC/UBEC with SimonK. It looks like that is possible. You should have better luck with…"

"You either use the power from the ESC or if you need to you can use a 5v battery pack and attach the ground (GND or - ) which should be the black wire to ground pin on the receiver. Then attach the 5v ( + ) red wire to the corresponding pin on the…"

"Try calibrating each ESC by itself. Simply disconnect the esc cables from your flight controller and then plug  each esc directly into channel 3 on the bond receiver. follow the instructions about the throttle fully extended power on listen to the…"

"Oops, sorry I misunderstood. The power is pulled off the receiver from either the rc(sbus/ppm) or spkt/dsm ports. I have the X8R and use the SBUS to RC cabling and then I have used the spectrum satellite to the spot/dsm on a number of quads at my…"