2017-02-01 00-17-18.bin (2.0 MB)
I need your help cause i already checked that all first flight check has been done but I have still 2 issues :
_Stability : in flight the copter is controllable but some oscillations happen many times ( no vibration issue and not link to P gain after my first check)
_Altitude hold : As soon as altitude hold is active, the copter go up or down even if throttle at middle position (with or without sonar)
SW : ArduCopter v3.4
HW : Pixhawk Mini + GPS M8N + Optical flow + Maxbotix Sonar I2C
Copter : Tarot Robocat250
Thanks in advance for your help
stock gains are wayy too high for a robocat, i have a mini apm in mine and i had to turn pitch/roll rate P and I down to 0.080 to stop the shakes.
have you set your throttle hover position yet ?
Slightly off topic, but I see that you are using the Pixhawk mini with the maxbotix sonar I2C.
I am too using this configuration (though for a rover build) and cannot get the sonars working. I was wondering if I could ask you how you set yours up?
Thanks in advance,
Did you ever get your sonars working? I am trying to use a pixhawk mini with two Maxbotix Sonars
I have not yet. I plan on spending time next week and digging through the code. Hopefully it will be an easy fix.
Which firmware are you using?
W1702 Arducopter stab issue.param (11.0 KB)
I tried with lower Pitch/Roll P rate but at this time the issue didn’t disappear. I will try again. Thanks for your feedback
I just simply connect I2C from the Maxbotix sonar to my I2C hub and changed some parameter ( parameter list enclosed). Let me know if you have other questions. Thanks.