moadi:
Are we sure it’s the 3rd motor that’s failing?
From the video, it looks like 1st motor took the hit during the contact with the ground. It is no surprise to see it make weird noises.
moadi:
I replaced the upper left motor and tested it, first flight, 10 minutes, no issues, second flight, 5-7 minutes no issues, then after a few hours I went for another test flight, basically hovering in the same position, and it did the same thing, crashed.
It looks like motor 3 failed again. If you changed both ESC and motors before this flight, I would suggest you check flight controller pins.
Personally, I would ditch Radiolink Pix mini v1. The firmware is outdated and close source. There are other cheap options on the market that don’t violate the GPLv3 license. You can find more information related to Radiolink Pix mini v1 in this thread.
I would like to point out this new product, it seems interesting:
[Edited after @hunt0r post]
http://www.radiolink.com.cn/doce/product-detail-133.html
I would like to have more information especially if it works with official Ardupilot or if it use a custom version, as there is a link in the site to download their version of MissionPlanner.
Ciao
Andrea
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