Nick Donnelly
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  • Troy, MI
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APM 3.5 Instant Flip on Takeoff

Started this discussion. Last reply by Marc LE BRET Apr 3. 6 Replies

Hello,We have a quadcopter we've built using Emlid's Edge flight controller. Everything is well calibrated (according to QGroundControl) and looks fine. Whenever we attempt to takeoff, the drone…Continue

Tags: crash, flip, ardupilot, arducopter, apm

 

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Marc LE BRET replied to Nick Donnelly's discussion APM 3.5 Instant Flip on Takeoff
"Hello, Parameter reversed: could be part of QGroundControl radio calibration process.  Motor problem: It also could be a bad ESC calibration. You can redo ESC Calibration with a receiver and a 4 in 1 plug or repeat the process for each…"
Apr 3
Nick Donnelly replied to Nick Donnelly's discussion APM 3.5 Instant Flip on Takeoff
"Looks like we had a motor that wasn't performing consistently. Sometimes it would work as expected (during calibration!) but in the real world it wouldn't always work. We've got replacement motors coming and will try again then."
Apr 3
Nick Donnelly replied to Nick Donnelly's discussion APM 3.5 Instant Flip on Takeoff
"Thanks a ton for investigating. It's appreciated. I will try this and report back. What would cause that parameter to be reversed? I've never changed that manually."
Apr 1
Marc LE BRET replied to Nick Donnelly's discussion APM 3.5 Instant Flip on Takeoff
"There is something. In the Edge RC settings, RC2 (Pitch) is reversed. It should not. You have to reverse the Pitch channel of your RC Tx. You will have to redo the RC Calibration after changing your RC Tx…"
Apr 1
Nick Donnelly replied to Nick Donnelly's discussion APM 3.5 Instant Flip on Takeoff
"Marc, Thanks for the reply. Attached is the .bin, and below is an image of the copter. The props are 12x4.5'', however the grey ones are slightly stiffer than the black ones. Could this cause a problem? I've made a post on the…"
Apr 1
Marc LE BRET replied to Nick Donnelly's discussion APM 3.5 Instant Flip on Takeoff
"Hello, Try to share your .bin file (downloaded from Edge). From first look at the .log file parameters, you use default parameters. Can you share a picture of your quadcopter (from above) and confirm Prop size and take-off weight. Best place to…"
Apr 1
Nick Donnelly posted a discussion

APM 3.5 Instant Flip on Takeoff

Hello,We have a quadcopter we've built using Emlid's Edge flight controller. Everything is well calibrated (according to QGroundControl) and looks fine. Whenever we attempt to takeoff, the drone flips over on its side pretty much instantly. It is a fairly large quadcopter (550mm frame).I've attached logs below as we are pretty new to this and I'm sure people on here know more about how to diagnose the problem than we do. Any help to diagnose why this is happening would be helpful.Whatever other…See More
Apr 1

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