@Gourav1997 wrote:
I have modded the rc.local to start mavproxy at the boot up but it isn’t working. Please help asap
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Participants: 1
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Mavproxy not starting at the boot of Raspberry-Pi
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Problems with Initial Mode "Auto" ,instead goes to Hold
@sailordude wrote:
I’m hoping to get some help with the following problem. The idea is to tow a floating platform with a skidsteer setup some where on to the lake, then to initialize the autopilot so that it goes straight into LOITER at this point. My initial approach is to have a Start/STop Switch Set-up, so that when you hit the switch it performs a “Mission” which basically consists of 10 seconds of HOLD and then going into LOITER UNLIMITED. see: https://ardupilot.org/rover/docs/startstop-switch.html
When we want to re-locate the platform we would like to hit the switch again (motors stop) and we can tow it somewhere else.
Somehow I can’t seem to initialize the Autopilot in AUTO (even though the INITIAL_MODE is set to 10) and I suspect it has something to do with the loaded Mission.
Can anyone help? thanks
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Participants: 1
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cube 12S settup voltage not working
@markb2309 wrote:
Hello,
I am currently building a drone on a 12s setup.
But i have issues with the voltage reading on the cube so i can set functions like rtl on low battery and so on.
I am on the 4.0.1 rc2 firmware and use a mauch power bec.Does anyone have the same problem or have a fix to make it work?
kind regards
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Participants: 1
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Motor oscillations during Alt Hold, how to choose PID
@THKoelnMech wrote:
Dear all,
i have the problem, that the quad oscillates slightly in height during alt hold. One can hear the motor speed oscillate with 1-2Hz and the vehicle oscillate with the same frequency a few centimeter in height.
Its a very powerful 7" quad.PID:
PSC_ACCZ_I = 1, PSC_ACCZ_P = 0.5
MOT_THST_HOVER = 0.125.
MOT_HOVER_LEARN = 0According documentation: I/P=2 and 0.5<= P <= 1.5
How to chose PSC_ACCZ_I/P? The documentation says i should lower P & I - but I am already at the lower limit…
Posts: 2
Participants: 2
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Pixhawk Internal Compass Calibration
@Shaun055 wrote:
Up till recently, my pixhawk was working perfectly, I recently updated the pixhawk to Copter V4.0 (hexa) and now the main LED is flashing yellow, indicating “Bad Compass Health”. I have no idea how to fix this, I’ve tried redoing the accel calibration and nothing changes, still says bad compass health
I would really appreciate some help
Posts: 8
Participants: 3
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Thrust tests: Motor Thrust Scaling in Motor Tests? In Motor Tests: CTUN.ThO == Throttle?
@peterst wrote:
Hi everyone!
I want to determine the function that describes what thrust is produced at which throttle, for my particular UAV.
Therefore I set the UAV to perform a certain throttle, and measure the thrust it produces. For now, I used the Motor Test of MissionPlanner. The curve I got so far is highly non-linear (regression: thrust / N = 0.001032 * (throttle / 100%)^2.302). As motor thrust scaling (https://ardupilot.org/copter/docs/motor-thrust-scaling.html#motor-thrust-scaling) is performed withMOT_THST_EXPO == 0.5, my gut tells me the curve should not be that non-linear. So my first question is:
- If MissionPlanner’s Motor Test routine is performed, does ArduCopter apply Motor Thrust Scaling?
An alternative approach would be to arm the UAV and put it into STABILIZE mode. Then I would slowly increase the throttle and measure it.
Hence my other two questions:
- Is there a way to immediately show the actual throttle value at MissionPlanner’s HUD?
- Is the log entry
CTUN.ThOthe throttle value I’m looking for (the value after motor thrust scaling)?Yours,
PeterPS: I have a quadcopter (X-configuration), ArduCopter 3.6.11, MissionPlanner 1.3.68
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Participants: 1
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Please recommend power module sensor
@TheTroll wrote:
Hello!
At this moment I’m using separate voltage and current sensor from my flight controller.
I have standard power module and it’s works.
Tje problem is I’m usually flying at currents less than 3 amp. In this range my power module isn’t precise enough.
Could you please recommend good enough power module for light builds?The internal sensor of MatekF405 - wing was doing pretty good
I’m looking for similar sensor but external
Thanks!
I’m looking for similar sensor but externalPosts: 1
Participants: 1
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Logging failed on AC 4.0.1 rc3 cube pilot
@kalai1219 wrote:
I Have updated firmware to AC 4.0.1 rc3 then I rebooted and I got message that prearm :logging failed
I have changed parameter log_disram = 1(enable).
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Participants: 2
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Ardupilot contribution of the month, December 2019
@OlivierB wrote:
Congratulations to Ardupilot community member dexmr, aka Dave, for winning the Ardupilot contribution of the month prize for December 2019!
A long time community member and Ardupilot user, (see this older post for instance) Dave was nominated for his high level of Ardupilot expertise and for the large number of posts he has authored helping many users over the years, in addition to his reports testing release candidates.
This was especially appreciated by the dev team recently with the release of Copter 4.0, a landmark release which, naturally, generated a lot of interest but also many questions. Dave helped with many of them, here for instance, or here, to point to just a (very) few.
Cheers Dave! Perhaps the prize will help you towards the purchase of a new flight controller, or contribute to yet another build! …
The prize for the month was $200 for the top contributor. Many thanks to those who donated to ArduPilot, including our Corporate Partners . If you are a company and wish to donate a prize for an upcoming month, please email the partners email list (partners@ardupilot.org).
Congrats and thanks again!
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Participants: 2
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Issues with ground steering
@John_King wrote:
I have a rover built from a hoveround power chair. Sabertooth 2x32a motor controller, matek 405 std, bn 880 gps/mag. I have the tx calibrated, and channels assigned correctly. Pwm limits appear to be set correctly. Using the standard throttle/ground steering setup. My issue is that the ground steering parameter in the servo config screen shows that at stick neutral is 1696, min is 1500 and max at 1900 when I move the stick. I can’t imagine this is correct. Can someone please help me out.
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Participants: 1
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External Baro Sensor on CAN
@smartdave wrote:
In looking at the GND_EXT_BUS setting it says “This selects the bus number for looking for an I2C barometer” Is there a setting to enable a Baro sensor on the CAN bus?
I am currently using both a Zubax’s GNSS 2 with Baro as well as the new CUAV NEO 2 Pro CAN GPS which has a MS5611 Baro Sensor.
What settings would I change to enable and use this baro sensor?
Thanks
Dave
Posts: 3
Participants: 1
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Fuel flow sensor configuration
@kalai1219 wrote:
I have pwm output fuel flow sensor and I wanted to connect and configure with cube.
Please help me if any one knows.
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Participants: 1
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Compas shift when mounted
@Giuseppe wrote:
Hey there
I’m Using Rover 4.0 on a Pixhawk 4.
I calibrated the compass while the Pixhawk was connected to my notebook, and it worked fine.
But as soon as I mount the compass on my rover it starts to shift, and ends up pointing in the wrong direction.
I disconnected all the devices, (RC, powerboard) and so on to make sure it does not interfere somehow.But it still shifts, when i lift the Pixhawk 4 of my car ~1 m above the compass starts to point correctly again.
Any Ideas?
Thank you
Harry
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Participants: 2
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Motor 1 and 2 mismatch in yaw
@davidae wrote:
Hello, I had a strange behaviour the other day with my drone. When I took off and I did a YAW movement, the drone started to shake and later it recovered, I continued fliying and all was almost ok, because in some moments it shaked it again. I have seen that in some moments, motor 1 and 2 mismatch and the pwm is opposite but later are good again.
My quadcopter setup is:
Motor: T-Motor u7 420kv
ESC: Hobbywing x-rotor 80A
Props: 15x5.5
Battery: 6S 16000mAh
FC: The Cube Pixhawk 2.1I can’t find the real problem of the drone, so does anybody know what could be?
This is the log: https://drive.google.com/open?id=1Bp9FJyoOgS_96R1AhRJkE40hgtebMpAZ
Thanks!
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Participants: 1
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Quadcopter flip in auto takeoff
@Lamhidra_production wrote:
Hi everyone I want to do auto take off by mission planner but my drone flips,
I tried manual take off by loiter mode everything is fine.
Do you have any idea guys ??
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J120 USB not recognized with JetPack 4.3 on TX2
@Kyomo_Jung wrote:
Hi,
USB is not recognized with JetPack 4.3 on TX2 ( even mouse and keyboard )
AUVidea has instruction on only JetPack 4.2.Is there anyone who can let me know how to patch J120 USB driver?
Pls help this poor newbie on TX2 ^^;
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Participants: 1
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Simple Object Avoidance with 360 lidar
@Julien wrote:
Hi guys,
I would be please to get some advise about parameters setting for Simple Object avoidance.
I need to use a drone to follow building walls without hitting them. Because of some holes and or windows on this buildings, i choose a 360 lidar ref RPLIDAR A2 (to be able to detect the windows borders when aligned with a hole)I already configured the Pixhawk to use the Lidar and have some questions about advanced features :
How can i define a specific detection area ?
I saw on this page of the Wiki that the 360 area could be divided in 8 sectors and that these sectors could be used or ignored by the drone. In my case i would be please to use only the 135 degrees front sector (sector 1+2+8) but i can not find how to deactivate the not needed ones.Can we define the range detection manually in the parameters ?
In other words, can we exclude objects detections in a specific distance from the lidar? to avoid detecting a GPS mast or something like that (very close to the lidar) eg: i want to detect dangers from 1m to 5m.Thank you in advance !
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Participants: 1
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EKF Compass issue Here2 and Z vibrations
@MerkaTony wrote:
Last couple of days on a Tarot 650 frame with Cube Black and Here2 i found that my compass started going orange to red during flight (as also my Z vibes spiked and have Clip2 start jumping like crazy).
Quad returned and landed but trying to figure out the culprit.
Prior to this flight https://plot.dron.ee/ptDg my compass was calibrated strict and all my other flights had now issues. Since then i have check my frame, checked prop balance (which was still good), FC and Here2 that were still in place but i cant see to pass calibration on anything more than relaxed and why my Z vides can stay low and occasionally start jumping around like crazy on values up to 50+.Any suggestions will be appreciated.
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Participants: 2
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Problem with PM wiring
@SkyHawkDP wrote:
It’s been at least a couple of years since I’ve been flying, I think the last version I ran was 3.3. I’m now with 4.0.0
It’s a new build.
For the most part good, for a first flight. But I got a low battery warning, the first I have for RTL and the second at land.
When It triggered for RTL, I hadn’t expected it, seemed a little early. so I freaked a little when it started to climb only a couple of meters away from where I had started.
But it peeled off fairly strongly to the right and I had no control because it was in RTL. It went into land before crashing.
But in the logs, I saw that the batt low tripped earlier than it should. Volt was higher than VoltR, and it seems it used VoltR to trigger the battery low…
I am calibrating the current resistor, since it’s a hex rotor, the standard resistor doesn’t give me the range. So I use a short piece of copper wire. But I might have the two leads mixed up, One goes to the battery and the other goes to the ESC. I thought I had them right, but if I’m not mistaken, VoltR should be higher than Volt under load rigth?
I’d include log, but can’t find where to do that…
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Quad Copter upgrade to pixhawk cube
@tdf1230 wrote:
I am using a pixhawk version 1 on a quad Copter and would like to update to a pixhawk 2.1 cube and would like to know if gps/compass I have will work on the cube as well as other connectors like the 3dr tel. Radios , tf mini lidars , power modules and such. If anyone has made a similar upgrade like this what problems did you encounter and what things had to be upgraded
Thanks for any help
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Participants: 2
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