In just a short while, ArduCopter 2.7 will become available for download in Mission Planner. As we worked on ArduCopter 2.6.1, we saw that it had several new and compelling features (as well as many bug fixes and improvement) so it was decided to make this a major version release.
A full list of changes is here, but they include:
New and Improved:
Hi all, I have a problem with 2.7.
to 1/3 of tx throttle begins to accelerate progressively to maximum, it just does not touch the accelerator,
is like having a command on or something that will only accelerate,
with no code has happened to me only with the 2.7.
everything else is perfect GPS signal level orientation etc.
perfectly balanced, with default pid, only on test bench.
APM 1.4 850 10x4.5 prop motor sc 10 amp sound frame lv EZ4 XAircraft 650v4
Norman, did you recalibrate your RC input as part of the MP setup process?
yes, I calibrated it. deleted the eprom. I changed to 2.6 and has no problem with only 2.7 to 1/3 throttle very gently begin to accelerate until it stops.
after checking with 2.6 operation, again by 2.7, by the mission planner, erase eprom, reset, calibration of all parameters, radio level, mode, etc, default parameters, accelerated and 1/3 begins to accelerate only gently to the fullest. happens with 2.7, I reload 2.6 with Arduino and all good. charge of 2.7 with the arduino this time, perfect load reset and delete configuration parameters again. all good. same thing happens to 1/3 of the stick begins to accelerate smoothly till the maximum.
Everything perfect again by 2.6. 2.7 and again: When i give throttle (Around 1/3) and let go my hand, it Slowly Increases the throttle to full. all calibrated as always happens, something new with the throttle. There is a thread on that show something similar.
the problem only manifests with 2.7, I tested from the 2.4 to 2.6 yesterday and today and only the 2.7 gives me the throttle problem. throttle (Around 1/3) and let go my hand, it Slowly Increases the throttle to full.
Solved my problem, after several loads and deletes decided to use the parameters of 2.6 in 2.7 and is working properly. are not exactly that the default parameters of 2.7 gives me the problem.
I think I know what the issue is...I think the IMAX value of the Yaw Rate term is too high (it's 50 when it should probably be around 8 or 10). So what happens is that while you're sitting on the ground, your yaw drifts a little (which is normal) so the yaw controller's I term builds up increasing the power to two motors (and reducing to the other two) in an attempt to cause a rotation but it's unsuccessful because it's on the ground.
I think on earlier versions of the code, we had the Rate Yaw's I Term as zero so it didn't matter about the IMAX but now it does.
Can you reduce the Rate Yaw's IMAX and see if your problem goes away?
Thanks for your reply, I will try comparing parameters and informs you, I think it's possible.
Hi. Is it safe to use "land" as a flight mode? Like when I invoke it, will my copter auto land? If someone would explain the land flight mode it would help me out a lot, the wiki is kind of lacking in this area.
If you switch to Land the quad will try to land at its current location. Most people don't use this for heavy hexas, octos, etc.
I suggest testing it on grass and with the quad less than 4ft off the ground. The quad should land, but the motors will not stop spinning (this is in the code). You will have to switch back to a manual mode to stop the motors.
Also, my quad has a tendency to flip over after it touches down because the motors keep spinning.
@Stephen: use autoapproach function! :-)
Great work everyone! I'm using stock 3DR/APM2, sonar, xbee and 3300-5000mAh 4S and carbon reinforced 10" props with stock motors. Yesterday I had the courage to take it to 500M and drop the throttle to zero. After hearing it whistling in free fall, I gave a little throttle and like magic it righted itself :) Now to try the flip switch :)