Gyro Problem

Technical Electrical
1

Hi

I am new to all this so any help will be good.

What im doing is im building a camera stabilizer. Ok all works good but there are a small problem with the gyro. What it does it compensates more to the one side than the other. Basicly what i mean by this is. Lets say i move the rig to the left at a 45 deg angle it will keep the camera level but if i move it to the right at a 45 deg angle it wons move the servo completely to where it should be to be level. this result in when i return it to 0 deg it is not level as well.

What can this be?

I use Futabu remote and servo and E-sky ek2-0704 gyro.

Tnx Allot

2

did you try more gain? sounds like its drifting.

3

It could be a number of things, such as:

  • cross axis sensitivity (either in the gyro itself or because your mounting isn’t 100% flat)

  • A/D conversion asymmetry.

  • Calculation asymmetry due to insufficient fixed point math resolution.

and there are other possibilities. Any more detail on how exactly you’re doing it?

4

Could be drift, but it could also be calibration error. In either case, if the rig is left still, it could be observed to slowly drift offcenter of its own accord. If it moves relatively fast and always in one direction, it’s a calibration problem. If it’s slower and seems to be jittering back and forth, it’s more likely to be drift.

Either way, as [Chris Hibner] said, more details are necessary. Posting your code may help as well.

–Ryan

5

Tnx allot for the reply’s. will take a video and post it to show the problem tomorrow.