Hi!
Thank you all very much for testing out my SH** and posting Videos!
Meanwhile i found, that not all ublox seem to behave the same and the current BF ublox parser is picky about the fixtype. Without a fix reported back, the gps functions are disabled. So i took the current mwii ublox parser and implemented it in harakiri9 and called it 9a. You can pick it up here
http://fpv-treff.de/viewtopic.php?f=18& ... =80#p21784 (i will upload it here as well). Maybe JollyJokers' quad lost 3dfix but still had a 2Dfix and the gps functions bailed out temporarily then? Try 9a and do PID tuning. The default pids are suitable for my quad (60cm diagonal and 1,2Kg) but GPS Pid tuning is still a real pain. Since the gps logic is basically the same, you will have to use eos bandi's guide
http://i2c-gps-nav.googlecode.com/files ... tation.pdf or the german translation
http://www.wii-copter.de/forum/download ... l&df_id=24.
Always re - do MAG and ACC Calibration after FW upgrade!! It will take you just 1,5 Minutes!
For Mag Calibration i use a long usb cable. I grab the copter at the center and do a complete yaw circle (like a pizza), than i repeat that with the copter upside down. Then i point it north and do a complete flip to the north and back, then i do a complete flip to the east and back. The cable is now wrapped around the copter and i swing the copter around to free the cable again. I don't know if it is a correct procedure but works for me....

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Don't use original BF with MTK19 it can not cope with /use it's binary protocol. (BTW: Ublox seems really better for me anyway. I bought this one:
http://www.voelkner.de/products/346888/ ... 2ETTL.html but there are always cheaper options)
Cheers
Rob
EDIT: This version has an option for the people "Damn i soldered all my esc and motors on my octo - and now i just want to test out one motor and i don't want to rip the whole thing apart"
Enter the cli("#") and type "feature pass" and "save".
Now the green and red led start to blink as a WARNING, because all the throttlecommands by your receiver are now given directly to all esc at once. You can calibrate all your esc at once in this mode now, BUT YOU CAN NOT FLY in this mode, because all the flightcontrol logic is off. The min/max values are ignored as well - just a pure passthrough for receiver throttle commands to the esc to mess around with them.
So now you have the cli still open you can set it to only adress one motor by typing "set passmotor = X". You don't have to type "save" the change is applied immediately. The "X" represents the motornumber like described in Timecops manual for your specific multirotor (predefined is quadx). When you put in "0" for x then all motors are adressed again. Once you are done type "feature -pass" and "save". Now you can go flying again.
One WARNING with Harakiri9a: When using feature pass, make sure your Transmitter is running, otherise the motors can power up with full throttle. I already fixed that but it is still in the 9a!!! So use that feature with care!