Can anyone please help? I need some serious help with a hexacopter issue. Hi everyone, I am hoping someone can please help me with an issue I'm having. I have flown the DJI Phantom for about 2 years and then I upgraded to a custom built Hexacopter recently. I finally seem to have all the kinks worked out but it is giving me other issues now. I shot a video today, while not taking it to high for safety reasons. I cut all the semi-smooth stuff at the beginning and put the bad stuff at the end all together so you could see what it was doing. It was flying smooth and steady on GPS and Atti mode but after about 5 mins, the hexa would act like it was going in to convulsions or like small seizures. Possible gains not set high enough? Blades are perfectly balanced. Any ideas? Also, how hot should the motors and ESC's get.Everything is brand new, iPower iBM2814Q 750KV motors, ipeaka iq 40a opto hv brushless esc with simonk firmware, DJI Naza-m V2, Hitec Optima 9 channel receiver, Hitec Aurora 9 radioPassword is: flighthttp://vimeo.com/m/101187323
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It's the entire chopper. I was able to capture a little video of it happening. Shot it using my phone so not the best quality or stable. Password is: flight
Here is the link: http://vimeo.com/m/101868413
That is weird. I would be hesitant to blame your PIDs (gains) because your glitches are intermittent at best and for the most part your chopper looks very stable.
Have you performed a CompassMot, and do you recall how many points were recorded when you calibrated your compass? (I think I clocked in around 800.) If you're not sure how to get everything properly calibrated a collection of excellent video tutorials is here.
Finally, I would strongly recommend you post a log file of a flight with the glitches so that the experts can have a look -- if haven't messed with log files before you should probably start here.
In addition to DIY Drones another good location to get help are the Log Files Analysis threads on the Ardupilot forum.
Hi Joseph, Were you witnessing the entire copter shuddering like this or was it just the camera gimbal? I was getting similar footage until I discovered a loose connected to the gimbal's IMU.
On the motor/ESC heat thing, warm to the touch is normal but too hot to touch is not good -- especially if you're mostly hovering at around 40 to 50 percent throttle. If it's just one motor that's hot I'd say bent shaft, bad bearing, out of balance motor bell, or out of balance prop.
If your motors all run hot all the time then they're underrated for the model. If your ESCs run hot all the time then they are underrated for the load.
When you balanced your props did you also balance the hubs?
Replies
Here is the link: http://vimeo.com/m/101868413
That is weird. I would be hesitant to blame your PIDs (gains) because your glitches are intermittent at best and for the most part your chopper looks very stable.
Have you performed a CompassMot, and do you recall how many points were recorded when you calibrated your compass? (I think I clocked in around 800.) If you're not sure how to get everything properly calibrated a collection of excellent video tutorials is here.
Finally, I would strongly recommend you post a log file of a flight with the glitches so that the experts can have a look -- if haven't messed with log files before you should probably start here.
In addition to DIY Drones another good location to get help are the Log Files Analysis threads on the Ardupilot forum.
Hi Joseph, Were you witnessing the entire copter shuddering like this or was it just the camera gimbal? I was getting similar footage until I discovered a loose connected to the gimbal's IMU.
On the motor/ESC heat thing, warm to the touch is normal but too hot to touch is not good -- especially if you're mostly hovering at around 40 to 50 percent throttle. If it's just one motor that's hot I'd say bent shaft, bad bearing, out of balance motor bell, or out of balance prop.
If your motors all run hot all the time then they're underrated for the model. If your ESCs run hot all the time then they are underrated for the load.
When you balanced your props did you also balance the hubs?