So I'm trying to tune my quad. It's a custom carbon fiber frame with rctimer 5010's and 17.5" carbon fiber props. I've tried tuning it but not matter what I set the values to it just wants to fly forward and to the right. It's like it thinks level is completely wrong.
I've tried setting level, recalibrating the compass, the gyros, checked the balance, made sure the props are balanced, made sure all the motors are straight, auto trim, save trim. I'm to the point now where I can't find anyone else who has a similar issue online and this is almost a last resort. I don't know how I'm going to get this thing to fly unless you guys can save the day. I'm flying 3.0.1.
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I have callibrated everthing but I still have heavy drifting, how do I perform the level calibration?
those motors and props are great I put them on a 450 quad and cut down the 17 " props to 10.5 i'm getting some drift what did you do to fix it?
Roll: 1515
Pitch: 1549
The values you listed are:
Hs4_trim: I can't find this value
Rc4_trim: 1493 is this value roll or pitch?
Hi Zach,
From what I have heard, the big RCTimer pancake motors can be problematic and actually quite different in current vs RPM / Thrust.
I have some on order myself.
BUT the bottom line is that if you have the APM level with the main copter and when you level it, it looks level on the HUD in mission planner when you are done, it should try to maintain that level (in Stabilize) even if the motors are a bit different.
When my little quad had an ESC failing, it would remain level and just appear to lose power until you had to land it, so the APM is pretty determined to keep it level.
I wonder if your problem might not be associated with your RC radio calibration or trim, if it thinks your pitch and roll stick isn't right in the center when it actually is it will cause the symptom you speak of.
But you can check that, in the complete parameter list in Mission planner check the Parameter for center Roll position and center Pitch position.
Then turn on your transmitter and go to the radio calibration section. If the roll / pitch number of your right stick while you are not touching it doesn't match those 2 parameters, you know the problem.
http://copter.ardupilot.com/wiki/arducopter-parameters/#RC_trim_PWM...
http://copter.ardupilot.com/wiki/arducopter-parameters/#RC_trim_PWM...
Those 2 numbers need to match the PWM values you see in the radio cal section while the roll / pitch stick is centered, if they don't it will fly in the direction of the difference.
You can also enter an offset geared for your copter in these if you can't fix it above:
http://copter.ardupilot.com/wiki/arducopter-parameters/#AHRS_Trim_R...
http://copter.ardupilot.com/wiki/arducopter-parameters/#AHRS_Trim_P...
There are certainly other possibilities, but based on what you have said this is a good place to start.
It happens in acro and stab for me. Oddly enough loiter works perfectly.
Does this always happen ? I sometimes get a similar or related problem where my hex wants to drift to the right when i switch to loiter. It only happens sometimes not always. Thats the frustrating part, the sometimes. I have been trying different things, but i dont have a proper solution.