Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 Hello everybody,
I´m new in this forum but not new in the FPV game.
I have already built various 5 inch quads and cinewhoops and have had a kabap style toothpick for a while.
After my Crazybee F4 board blew (no cap) I got the Darwin AIO FC F411 15A.
When the copter was finished, I updated to BF 4.3.0 and bluejay.
Everything looks normal in the BFC.
4khz/4khz, Dshot 300, bidirectional Dshot and RPM filtering is active.
If I arm the copter, it rotates 180 degrees around the yaw axis and then disarms again.
Board alignment, motor direction, props… I checked the common issues multiple times.
In the BFC I saw in the motor tab that motor 3 turns about 700 to 800 rpm slower than
the other motors. Since Dshot I don’t have to calibrate the ESCs anymore, right?
A few weeks later I built a completely new frame (Darwin Baby Ape 3″) with the FC.
New motors, new cables everything new.
After arming, he spins around the yaw axis again (no flip) and disarm.
Unfortunately, the FC does not have a black box, so unfortunately I cannot provide any data.
Ok the esc of motor 3 is probably broken.
After that I ordered the HGLRC Zeus 10A AIO FC.
Reassembled everything – same error.
A new board and he’s spinning around the yaw axis and disarms again?
According to the BFC Motor Tab, it is now motor 4 that shows slower RPMs.
This time only about 300 – 400 rpm.
Also interesting, in turtle mode i can control each motor individually with the remote control.
Since no PID controller is activated in Turtle mode, I suspect the gyro or the PID controller.
If I hold the copter in the air with my hand, I can arm and the copter always tries to
correct to the right - he makes small punches to the right.
I’m at the end of my knowledge here and haven’t found anything comparable on the net.
Does anyone have any ideas here?
I could send a video if it helps.
Thanks!
Steven from Germany
![[-]](https://intofpv.com/images/collapse.png) • Posts: 969 Threads: 73 Likes Received: 344 in 258 posts Likes Given: 157 Joined: Dec 2021 Reputation: 19 So, you have two completely separate quads, one of which you have also replaced the FC board on, is that correct? • Posts: 1,515 Threads: 49 Likes Received: 716 in 527 posts Likes Given: 478 Joined: Oct 2020 Reputation: 93 Please take a video moving the quad in front of the Betaflight setup screen around all three axis.
Can you also confirm the motor directions again? • Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 09-Oct-2022, 10:17 PM (This post was last modified: 09-Oct-2022, 10:17 PM by Steven FPV.) Motor Direction an prop map are correct.
Here's a Video from the Setup tab.
Also a vid showing the Quad after arming.
Thx for your Help! • Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 ...tried a few times to upload videos here...
I´ll upload to Youtube an then insert here. • Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 ..finally here´re the videos: Code: https://www.youtube.com/watch?v=-Uf9c0KVY_M
Code: https://www.youtube.com/watch?v=jdpscsDqxoo
I checked the board direction, motor direction, prop maping - all good. • Posts: 4,073 Threads: 75 Likes Received: 2,549 in 1,858 posts Likes Given: 3,949 Joined: May 2021 Reputation: 121 11-Oct-2022, 09:44 AM (This post was last modified: 11-Oct-2022, 09:57 AM by Lemonyleprosy.) If you slow that first video down to 1/4 speed, it looks to me like motor 1 is spinning the wrong direction. Looks like you're set up for props out, but that one motor is spinning in. I may not have circled the right one, but I'm pretty damn sure you've got at least one motor spinning the wrong direction. ![[Image: wiPH5zAl.jpg]](https://i.imgur.com/wiPH5zAl.jpg) ![[Image: bshZYOEl.jpg]](https://i.imgur.com/bshZYOEl.jpg) Dangerous operations.
Disclaimer: I don’t know wtf I’m talking about.
I wish I could get the smell of burnt electronics out of my nose. • Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 11-Oct-2022, 09:56 AM (This post was last modified: 11-Oct-2022, 10:02 AM by Steven FPV.) thanks for your reply!
Yes, I choosed "pro out" configuration - I´ll check the motor direction on motor 1 once again.
But what I can see in slowmo... Motor 1 spins opticaly slower and stops later as the other motors.
..also very strange, that in the BF motor tab it is motor 4 which is spinning 200-300 rpm slower than the rest. • Posts: 4,073 Threads: 75 Likes Received: 2,549 in 1,858 posts Likes Given: 3,949 Joined: May 2021 Reputation: 121 11-Oct-2022, 10:03 AM (This post was last modified: 11-Oct-2022, 10:20 AM by Lemonyleprosy.) Take off your props. run up your motors one by one in betaflight, using a strip of paper to check your motor direction. if you're holding one side of a 2" by 1/2" strip of paper in your hand (size really doesn't matter, just tear off some paper), and drop the other side of the strip onto motor, you'll see it deflect in the direction of rotation. If you're props out, they should each rotate according to the "reversed" image in my last post that I jacked from Oscar. It looks to me like it does when I've screwed up the direction of a motor or two. Anyhow, double check all of your motor directions with some paper, and match them to the photo above.  Dangerous operations.
Disclaimer: I don’t know wtf I’m talking about.
I wish I could get the smell of burnt electronics out of my nose. • Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 11-Oct-2022, 10:08 AM (This post was last modified: 11-Oct-2022, 10:09 AM by Steven FPV.) Yes - I know the "paper trick" - in this way I checked my motor directions.
But I´ll check it once again this evening.
I would be happy if it was just something that simple.
With a wrong motor direction - the quad would flip out and not only doing a 180 yaw spin. • Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 11-Oct-2022, 11:00 AM (This post was last modified: 11-Oct-2022, 11:10 AM by Steven FPV.) ...also noticeable in the slowmo is that the quad want to lift up, all the other motors are generating thrust,
but it looks that motor 1 did not produce enough thrust and the quad disarms.
This would also explain the yaw spin - when one motor spins slower than the others it results in a flat spin.
I have the problem that one motor rotates slower than the others.
With the first FC it was motor 3. - with the second FC motor 4 which, according to the BF motor tab, rotates more slowly.
From a purely visual perspective, it looks like motor 1 here in the video. Motor mapping is correct - I checked that. • Posts: 4,073 Threads: 75 Likes Received: 2,549 in 1,858 posts Likes Given: 3,949 Joined: May 2021 Reputation: 121 11-Oct-2022, 11:16 AM (This post was last modified: 11-Oct-2022, 11:23 AM by Lemonyleprosy.) My apologies, I’m an old school IT nerd and I used to do a lot of tech support, so I tend to go straight to the basics and then work up to complicated.
It sounds like you know what you’re doing, but it can help us and you if we get a bit of clarification. Hopefully it’s just some little thing- I can’t count how many times I’ve been tripped up by something as simple as a screw rubbing against a motor wire or an intermittent short that I couldn’t see without a magnifying glass. You can look at any of my build threads and see my frustrations.
Anyhow, please correct any of this that is wrong:
You blew a crazybee board, and then got a darwinfpv board, yes?
Configured everything, armed, and it spun around on the yaw axis.
You’re correct, you don’t need to calibrate the esc’s.
You built a new frame with new motors and wiring, with the same flight controller, and had the same problems.
Motor 3 was having issues.
Put in a new aio flight controller, same problem?
It is possible that when the esc on the Darwin aio died, it damaged a motor (or motors).
If it is not a configuration issue or a short, and not a rx issue, it seems like the only constants are: flight controller 1 (Darwin) with motor set 1, flight controller 1 with motor set 2, then motor set 2 with new flight controller 2 (Zeus).
Motor set 2 carried through and is the constant.
Maybe try a fresh set of motors with flight controller 2? Dangerous operations.
Disclaimer: I don’t know wtf I’m talking about.
I wish I could get the smell of burnt electronics out of my nose. Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 ...and the next strange thing: I build up another quad doing the same  It´s a Iflight Green Hornet build with TMotors and a JHEMCU F4 40A. Also BF 4.3, rpm filtering, bi-Dshot... And the quad ist doing exact the same yaw spin after arming. • Posts: 4,073 Threads: 75 Likes Received: 2,549 in 1,858 posts Likes Given: 3,949 Joined: May 2021 Reputation: 121 11-Oct-2022, 11:35 AM (This post was last modified: 11-Oct-2022, 11:37 AM by Lemonyleprosy.) (11-Oct-2022, 11:25 AM)Steven FPV Wrote: ...and the next strange thing:
I build up another quad doing the same
It´s a Iflight Green Hornet build with TMotors and a JHEMCU F4 40A.
Also BF 4.3, rpm filtering, bi-Dshot...
And the quad ist doing exact the same yaw spin after arming. Time to look at your transmitter. What does the receiver tab in betaflight look like when your transmitter is on? Anything jumping around or being weird? Dangerous operations.
Disclaimer: I don’t know wtf I’m talking about.
I wish I could get the smell of burnt electronics out of my nose. • Posts: 28 Threads: 2 Likes Received: 3 in 3 posts Likes Given: 1 Joined: Oct 2022 Reputation: 0 (11-Oct-2022, 11:16 AM)Lemonyleprosy Wrote: My apologies, I’m an old school IT nerd and I used to do a lot of tech support, so I tend to go straight to the basics and then work up to complicated.
It sounds like you know what you’re doing, but it can help us and you if we get a bit of clarification. Hopefully it’s just some little thing- I can’t count how many times I’ve been tripped up by something as simple as a screw rubbing against a motor wire or an intermittent short that I couldn’t see without a magnifying glass. You can look at any of my build threads and see my frustrations.
Anyhow, please correct any of this that is wrong:
All good I´m very happy that I got help here. Normaly the informations in forums or in Youtube are enough for me - but in this case....
You blew a crazybee board, and then got a darwinfpv board, yes?
Configured everything, armed, and it spun around on the yaw axis.
You’re correct, you don’t need to calibrate the esc’s.
- yes - exact what I was doing - and I changed motor 3 to a new spare one I had - same issue
You built a new frame with new motors and wiring, with the same flight controller, and had the same problems.
Motor 3 was having issues. - no this time (the new) motor 4 was having issus
Put in a new aio flight controller, same problem?
Yes - I put in the Zeus AIO 15A - same problem with motor 3
It is possible that when the esc on the Darwin aio died, it damaged a motor (or motors).
If it is not a configuration issue or a short, and not a rx issue, it seems like the only constants are: flight controller 1 (Darwin) with motor set 1, flight controller 1 with motor set 2, then motor set 2 with new flight controller 2 (Zeus).
Motor set 2 carried through and is the constant.
Maybe try a fresh set of motors with flight controller 2?
I have an older set SunnySky 2s Motors - I´ll try this evening • |
