All first attempts at flight are unsuccessful. I am running APM 2.5 Quad “X” with V2.8.1 and latest Mission Planner. I have checked motor test and all four motors turn correct direction for “X” and follow sequence during testing. Mission planner confirms Quad in “X” config. Radio calibrates OK. I have gotten the machine light on the skids and verified that yaw is reversed. I corrected this in “Advanced Parameters” by reversing RC4. Now yaw is correct on light skids. Pitch and Roll are weird to the point I can’t determine if either are right. Machine doesn’t lift off correctly and is uncontrollable in low hover.
Here’s what I have done… Yaw is OK so I leave it alone. I have made a matrix table for pitch and roll as follows –
Pitch Normal Reverse Normal Reverse
Roll Normal Reverse Reverse Normal
Yaw Reverse Reverse Reverse Reverse
None of the above combinations allow a flyable machine. I’m using a Spektrum DX8 in Acro mode with no mixing and all channels set to normal (no reversing). Man, this is like pulling teeth. Any help appreciated…
Replies
Do you have "Simple" mode checked in your flight modes? You might want to un-check this while testing. It translates pitch and roll inputs depending on the heading (yaw). This had me confused for about an hour until I realized it.
With multicopters you should reverse channel at your RC transmitter, not at the APM level. That's why we disabled the reverse checkboxes in the MP for copters.