I'm waiting to see what they write from JHEMCU, then we'll see, but the expectations are not high...
I have one more question, you wrote that you have a lot of those AIOs. There is absolute chaos in the labeling of specific types, you never know what they will send you. Primarily, there are 20A and 40A versions. If I look at the photos it seems to be exactly the same, just different FETs are used or am I mistaken?
From your photo, the SMD code ON3108 is visible and I couldn't even find that. It's all about nothing, they keep changing the parts on the PCB, they can't maintain the quality, not even by mistake.
(26-Oct-2022, 07:29 PM)MomoBrut Wrote: I'm waiting to see what they write from JHEMCU, then we'll see, but the expectations are not high...
I have one more question, you wrote that you have a lot of those AIOs. There is absolute chaos in the labeling of specific types, you never know what they will send you. Primarily, there are 20A and 40A versions. If I look at the photos it seems to be exactly the same, just different FETs are used or am I mistaken?
From your photo, the SMD code ON3108 is visible and I couldn't even find that. It's all about nothing, they keep changing the parts on the PCB, they can't maintain the quality, not even by mistake.
That is the same FET they put on the ICM boards as well. The old MPU6000 boards were sold with 25/35A ESCs. The board in the screenshot is the 35A model.
One more question, it seems to me that your Vista is powered directly from Vbat. Is there a special reason for this? The AIO has a 10V BEC, why aren't you using it? Is there a problem with it? I power Vista from this BEC according to the JHEMCU recommendations, I can still change this, but I don't believe that it should cause noise in the gyro.
its a higher risk for noise if you run it over a bec. leave the ground on the fc side and add voltace of the lipoin, it shouldnt but could be a solution bad board design or low quality faulty components could bring noise there
27-Oct-2022, 02:48 PM (This post was last modified: 27-Oct-2022, 02:53 PM by Recursion.)
(27-Oct-2022, 11:27 AM)MomoBrut Wrote: One more question, it seems to me that your Vista is powered directly from Vbat. Is there a special reason for this? The AIO has a 10V BEC, why aren't you using it? Is there a problem with it? I power Vista from this BEC according to the JHEMCU recommendations, I can still change this, but I don't believe that it should cause noise in the gyro.
I'd get random freezes of the Vista in flight at max output. Problem went away when I connected to vbat. Seems to be an issue with many board regulators. Like hugnosed suggested, it was probably a low voltage spike causing the board to brown out (cpu crash). I connect the voltage input to battery, and ground on the board and have not had an issue since on any build.
Today was a long day, again... I have 6 new logs. First I flew with the original Vista power supply from the BEC, I set the highest rates and properly bashed it. I didn't notice it before, I didn't have such rates. I had two Vista freezes, short freezes, not even a second. So confirmed the JHEMCU AIO has a problem with powering Vista from the dedicated BEC. I use internal BECs on all my 6s quads, no problem with them (Diatone, HGLRC, T-motor, HW FC and ESC). So I rewired the Vista power to Vbat and the blackouts went away. As for the propwash, it had no effect. However, I tuned the PIDs and filters to the best possible state. The quad is stable and smooth in all modes, the only thing is propwash, wobbles occur whenever the propellers fall into broken air. Increasing the master multi further would help, but this again leads to unhealthy motor noise as I have a noisy gyro. If a filter is used that suppresses the noise (fc less than 100Hz), the propwash gets worse, even when the master multi is raised. You can certainly fly with it, but it pisses me off. My best PIDS and filter settings are down below ...
28-Oct-2022, 02:14 AM (This post was last modified: 28-Oct-2022, 02:18 AM by Recursion.)
What was the reason for turning off Gyro Lowpass 2? Assuming you're running a 4k PID loop on this board, it's recommended to keep on.
I'd still love to see blackbox with RPM telemetry data doing the manuvers I described before. Would at least give me an idea how those motors perform (thrust) without having them to test on my stand. Those PIDs are super high.
Do you have flight footage of the flight along with regular blackbox data so we could see how bad the propwash is and how the charts look like?
30-Oct-2022, 05:47 PM (This post was last modified: 30-Oct-2022, 06:05 PM by MomoBrut.)
(28-Oct-2022, 12:45 PM)hugnosed_bat Wrote: i would check the cpu load with command "tasks" in the cli
For the 8/4kHz Gyro/PID loop frequency I am at 43.4% in BF4.3, nothing excessive according to my experience in BF4.3. My MAMBA F722 in my APEX5 with 8/8kHz Gyro/PID loop frequency is about 48.6%.
(28-Oct-2022, 02:14 AM)Recursion Wrote: What was the reason for turning off Gyro Lowpass 2? Assuming you're running a 4k PID loop on this board, it's recommended to keep on.
I'd still love to see blackbox with RPM telemetry data doing the manuvers I described before. Would at least give me an idea how those motors perform (thrust) without having them to test on my stand. Those PIDs are super high.
Do you have flight footage of the flight along with regular blackbox data so we could see how bad the propwash is and how the charts look like?
As for Gyro LP2, I turned it off because there is no noticeable difference in flight between on and off. I throw away everything from the PID loop that is not needed and introduces a delay. And that is also logical, in your settings the cutoff frequency is 850 Hz and that is really high, it is impossible to even recognize that there is any filter at all. And in my log, nothing happens above about 700 Hz ...
The weather here is still terrible, it is not possible to fly, still thick fog or rain, and it's dark a while after I get home from work.
03-Nov-2022, 09:33 AM (This post was last modified: 03-Nov-2022, 09:40 AM by ph2t.)
(26-Oct-2022, 06:26 PM)Recursion Wrote: The ICM Gyro is amazing on paper, but it has to be powered properly. JHEMCU obviously didn't take the time to do that (or even test it) as it looks like they just threw a large cap on the input and called it a day. I made a video about it here.
OK, I just want to say that video you posted is very entertaining mate. You had me laughing, you're like an angry bardwell, lol...
"It is what I would say if I wanted it to fly like shit, because it flew like shit...." AND this nugget "Whatever is making the gyro go into tourette's mode...."
Seriously did anyone watch this video? Damn funny....
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