Posts: 128 Threads: 25 Likes Received: 6 in 6 posts Likes Given: 45 Joined: May 2020 Reputation: 0 Hi, everyone, I haven't flown in 2 years and have decided to get back to the hobby. I bought a new Skystars F722 stack, and I started configuring my drone in iNav, got everything working, VTX BUZZER GPS and it all seemed ok. I verified that all the motors are spinning in the right direction, and mounted the props the right way. Tried to slowly put in power, noticed some noise, disarmed and put sligthly adjusted the filters. Tried to gradually increase power again, no noise, after 25% on the throttle, the drone puts around 60%-80% on 2 motors, while the other 2 decrease to 0% power. at that point I'm at 0% throttle with the stick and I immediately disarm. no harm to no one (open field) or to the drone. it happened a few times, I'm confused as to why. I have the blackbox log here: https://www.mediafire.com/file/bs0gwkanu...0.TXT/file Anyone can figure out what could cause it? ![[-]](https://intofpv.com/images/collapse.png) • Posts: 8 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 4 Joined: Apr 2022 Reputation: 0 Try checking board orientation. Sleepycbr
Favorite drones: 2fiddy analog 2004m, CL1 5" analog, 2306m • Posts: 128 Threads: 25 Likes Received: 6 in 6 posts Likes Given: 45 Joined: May 2020 Reputation: 0 (29-Sep-2023, 10:46 AM)Sleepycbr Wrote: Try checking board orientation. Board orientation looks to be fine, it points and rotates in the right direction on the setup tab • Posts: 926 Threads: 68 Likes Received: 339 in 253 posts Likes Given: 153 Joined: Dec 2021 Reputation: 19 Last time that was reported the owner had put two props on upside down, so pitch angle right, but lift greatly asymmetric. Convex up, Concave down. • Posts: 128 Threads: 25 Likes Received: 6 in 6 posts Likes Given: 45 Joined: May 2020 Reputation: 0 (29-Sep-2023, 12:12 PM)BadRaven Wrote: Last time that was reported the owner had put two props on upside down, so pitch angle right, but lift greatly asymmetric. Convex up, Concave down. I went out to try again and this time paid extra attention to putting the props the right way up, wasn't any different sadly. I did however increase the throttle very very slowly, and I've noticed that at some point the VTX antenna (150mm) starts vibrating and shaking and it throws the quad off. so I need to either filter it out, or to use a shorter antenna, I don't know • Posts: 1,728 Threads: 60 Likes Received: 1,003 in 728 posts Likes Given: 96 Joined: Jan 2023 Reputation: 52 It looks like either your motor order, motor direction, prop orientation, or board orientation is not setup correctly. From your log motors 2 and 3 are spinning up, but not 1 and 4, and completely unable to achieve setpoint on any of the axis.
If you are running props out, make sure you have MOTOR DIRECTIONS IS REVERSED enabled on the motors tab. In BF, spin up one motor at a time and make sure it is spinning the correct motor per the diagram and in the correct direction per the diagram.
What motors/kv and what battery are you using? • Posts: 128 Threads: 25 Likes Received: 6 in 6 posts Likes Given: 45 Joined: May 2020 Reputation: 0 (29-Sep-2023, 06:27 PM)mstc Wrote: It looks like either your motor order, motor direction, prop orientation, or board orientation is not setup correctly. From your log motors 2 and 3 are spinning up, but not 1 and 4, and completely unable to achieve setpoint on any of the axis.
If you are running props out, make sure you have MOTOR DIRECTIONS IS REVERSED enabled on the motors tab. In BF, spin up one motor at a time and make sure it is spinning the correct motor per the diagram and in the correct direction per the diagram.
What motors/kv and what battery are you using? 2508 1200kv, 6S in these logs, I tried 4s as well. I have checked order and direction, running props in and my prop orientation (upside down or not) I've paid attention for today's flight, and it still behaved the same. I span one motor at a time in iNav and verified all the motors spinning the right direction before these flights. My current plan is to wait for a replacement receiver (current one was destroyed in one of the crashes), and try it again in BF this time. • Posts: 1,728 Threads: 60 Likes Received: 1,003 in 728 posts Likes Given: 96 Joined: Jan 2023 Reputation: 52 And you have counter-clockwise props on motors 2 and 3, and the prop nuts are secured tightly? Make sure those props cannot spin/slip on the shaft while holding the bell. • Posts: 128 Threads: 25 Likes Received: 6 in 6 posts Likes Given: 45 Joined: May 2020 Reputation: 0 (29-Sep-2023, 10:43 PM)mstc Wrote: And you have counter-clockwise props on motors 2 and 3, and the prop nuts are secured tightly? Make sure those props cannot spin/slip on the shaft while holding the bell. Yeah, they're tight, 2 clock wise and 2 counter-clockwise in the right places for props in. I'm really starting to think it's firmware related. I had to download a firmware off of GitHub for my SkyStars F722 HD Pro FC, because whenever I flashed the firmware through iNav, the accelerometer never got detected. In BF it gets detected without any problems at all. and I did go through the configuration tab in iNav and tried to get it to work manually of course, but nothing sadly. So I'm thinking that, if I had to download the firmware online, and that was the only way for my build to work, maybe there are more problems with the firmware. • |
