Multiple crashes in auto mode quadcopter
the drone crashed three times in auto modes, sometime it works nicely in auto mode but failes in guided or auto mode all happened in auto mo de, 2 times c3 motor rcou went high and the diagonally...
View ArticleOptical flow + GPS in EK3 fusion
Hello, I would like to setup my quad to fly outdoors and use the gps + optical flow for loiter mode. | Is there a way I could setup to fuse the optical flow & gps such that: It fuses optical flow...
View ArticleOptical flow + GPS in EK3
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Crash while taking off
I did multiple test , drone is immediately crashing as soon as i increase thrust, i thought it is a pid related issue and started changing these values and but drone is immediately flipping after...
View ArticleHexacopter Crash, seeking for root cause
Hello Community, I crashed recently my ZD680 Hexcopter , and now I am asking for your help to identify possible root causes. Log file: Link Facts: ZD680 Hexacopter, 4.5kg, Arducopter 4.7.1, Pixhawk...
View ArticleUncommanded turn after lift off
After lifting off, the helicopter almost always turns 90° to the right. Why ? Log file 8 posts - 3 participants Read full topic
View ArticlePreArm: Gyros inconsistent
Hi, I use a Cube Orange in my 28" quadcopter. It is running Arducopter 4.5.7. After mounting it in the drone it was recalibrated (full accel calibration and level calibration). I don’t use a compass...
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Copter speed not increasing in SITL
I want to achieve 50m/s speed in my SITl i am using model X and multirotor i have changed the WP_spd to 50, angle_max to 60, SIM_BATT_VOLTAGE 12.8V but it goes only 18m/s and it only achieving the...
View ArticleDrone took off by itself
I went to test 4.7.1 today to see if the super simple mode was fixed. It did work correctly now with this update. Everything flew perfectly and I landed and upon landing I pulled the throttle all the...
View ArticleEKF3 vertical velocity/position runaway with BARO + no VELZ, while...
Hi, I am investigating a repeatable vertical estimator problem on a 3.5" 6S cinewhoop running ArduCopter 4.7.1. I am sharing three original DataFlash logs showing two different behaviours depending on...
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Coaxial X8 on a rectangular (non-square) layout — motor mix, roll/pitch...
First-time large-multirotor builder, looking for a sanity check before I cut metal. I have the motors and I’d rather find out now that I’ve picked wrong. Not flying yet — still at the design stage,...
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ELRS not triggering RC Failsafe until its too late
I’ve recently had two quads run into an issue where the RC inputs go to a seemingly random flat value. First quad: Log ELRS_Aug18.bin Second quad: ELRS_Sept22.bin In both cases this flat-lining of the...
View ArticleArducopter 4.8 dev and am32
I have a quick question I am running arducopter 4.8 dev with am32 esc protocol. Does ESC Kv affect the tuning or anything if I have 0804 12000 kv motors and Am32 only goes to 10222 kv. 2 posts - 2...
View ArticleSIM_GPS1_HNSE fault clear trips EKF position lost failsafe
TL;DR: it’s not the GPS fault itself that trips the EKF position lost failsafe, it’s clearing the fault I was testing how a GPS guided descent handles injected GPS position error in SITL (ArduCopter...
View ArticleOscillations and crash
Hi, Here is a log of a flight with a quite large drone : 50Kg, 4 batterys 12S/39Ah and 36’ propellers. I have a quite clear idea of what was wrong, but my boss disagree… So if someone have some time...
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Coax-Copter with Gimbal controls for roll and Pitch
Hi, I am building a CoAx-Copter with gimbal controls for roll and pitch. as far as I explored the ardupilot documentation of Copter setting a frame class = 9 is only for the coax copter with flaps. I...
View ArticleMAVLINK Command for beeping motor
Hello, is there a Mavlink command out there that can be sent to the autopilot via a companion computer to beep the motors. I am using DSHOT300. I need this to signal to the pilot that the companion...
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Watchdog after a flight with temporary loss of control. No crash, soft landing
Hi All! I am experimenting with some aerodynamically unstable designs. The drone lost stability in flight and started tumbling (this was expected), got back under control, and landed softly. On the...
View ArticleSafest autotune axis
Hi I was going to run autotune this weekend but since my quad is little low quality because of the ‘generic pixhawks’ it might crash in autotune. I have followed all steps from the wiki as it suggests...
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Inflight optical flow calibration fail or pass
Unable to get a Scalar for Micoair MTF-02P during optical flow in-flight calibration. Attempted twice, and the result is the same. Why? Is it normal? In my experience with other optical flow sensors...
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