Here is a test video (no post processing) I really need you guy's opinions on how to remove the tiny shake (it's not much but ruins the shoot)...
The 3 axis gimbal is carrying a D800 with 14-24mm @ 14mm Roll : 5208-180T Power=135 P=25 I=0,02 D=16 Pitch : 5208-180T Power=125 P=20 I=0,02 D=10 Yaw : 8017-120T Power=150 P=12 I=0,02 D=15 Battery is 4S Gyro trust is set to 80 firmware 2.40b6 motor cage on all axis
Start by increasing the overall power to 200except on pitch leave it at 180. Then come back and report after you done this. :-) Of course you´ll have to lower the P to around 15. I have some more tips but only after seeing the result with more power.
Teo don´t worry...the main power can be at 200 no problem...max. temperature shouldn´t be over 75centigrade :-) That power is related to the voltage the board will give to the motors when needed. It will translate into steadiness. It is not that your footage isn´t stable but that´s what you can do to improve. I usually prefer the gyro trust to be 110.
i raised it from 130 to 150 and seeing some improvements, but motors are getting hot (i touch the coils and they are hot I'm gonna try 200 on roll to see
get a temperature gauge 60-70 degrees is ok. Don´t measure the coils touch the exrternal metal. If they were hot you couldn´t touch them :-) The pitch is not as demanding as roll and yaw...
increase D first before reducing P. It means it has either too much power or low D. What happens is that it is reaching the limit for resonance... Your D800 needs higher PID´s. When I saw your figures already knew it was low. Anyway what you can do is leaving the gimbal on for around 10 mns and then check the temp. It won´t get much hotter than that. With a 5D I have my 5208´s at around 55 degrees all the time.
Tomorrow i will experiment the gimbal on a steadicam arm I'll let you know how that goes I've just modified 3 tube links to be much stronger as well And i'm now gonna work on higher power PID's but need to get a thermometer somewhere first The roll motor does get kinda hot.
Is the 5108-120T stronger than the 5208-180T ? I'm wondering if I shouldn't upgrade that roll motor.
Hi Teo. Those motors are ok. No need to change them yet. Don´t use gyro high sensitivity. Don´t need it. Don´t forget to set the calibrate the accelerometer. It resets when you press default.
@Teo as far a I know high sensitivity is just a multiplier 2x. So with it turned off you need to scale all values by 2 (not the power though, just PID)
Man, i just tried it running in my room and it looks awesome Gonna try it in the garden in the morning and i'll post a video I hope it's perfect ;) And i figured that, even if the power is too high for the motor ( the motors are rarely running more than 3-5 min anyways per shot So they wouldn't get too hot... I tried removing the high sens and changing the pid to half and to double, but it's acting much better with the high gyro sens on at the moment, I'll see for sure in the footage tomorrow
Also, I've set the gyro trust to 100, what is the theory behind it for handheld ?
I set it at 110. What it means is the system "trusts" the gyro more and less the accelerometers...the higher you go less acc. and more gyro. I don´t think the power is too high and too hot. Can you touch the motors? If you do without getting burnt they´re ok. :-)
Amazing stabilty :-) I would say it is 99,9% perfect. Try to lower the I on pitch to .03 or .02 Also raise roll I to .03 and Power on pitch around 175, and let me know what happened. I would need to see the gimbal on the stand so I could hear and see how the axis go back to neutral when you upset the axis...specially pitch and roll. I might change somethind on the D but looks very very good. But changing D only after seeing...
i'll do that, i'm not so sure why i raised it... maybe i could raise the roll power to 190 but oboe that it starts getting rather hot How does yours perfume running shots ? i get a bit of shake - could i expect to be able to remove it or is that pushing it too far ?
Don´t raise roll P yet just I...one thing at a time. change the I´s and pitch power. I don´t see much shake...the thing is you have no reference so your reference is infinity...when you follow someone you don´t see any shakes. Do those chages I sent and try again. You are there... ;-)
I start in follow mode, go to normal mode, move so that yaw is correct and go back to follow mode. This works but is a irritating starting procedure. I have a joystick, but using it to correct the yaw in follow mode causes problems.
Ps. You lucky guy, to have so well working gimbal ;-)