Verifying real vs theoretical distances

bernardomattiucci

Is it possible to derive the actual distance traveled in X and Y using the head-mounted accelerometer?

Or is there some other way to do such verification?
Because my printer has some inconsistency between measurements of the 3D object and those of the printed object. Different differences for X and Y and I don't understand what the specific problem might be.

To preface, I just did a belt upgrade, fitting 9mm Gates Powergrip GT2's on the Y-axis (2 in parallel) and a 6mm Gates Powergrip GT2 on the X-axis, but I get the impression that there is some other problem that I can't pinpoint!

This is a 3d printed scale on Y-Axis.

Thanks

MJLew

@bernardomattiucci The time integral of acceleration gives velocity and the integral of velocity gives you distance, so the calculation is mathematically possible. I think that such a calculation is part of inertial guidance for rockets. However, any errors accumulate over time and so the position calculated that way becomes more and more inaccurate unless there is a way to repeatedly anchor it to position determined more directly.

oliof

@bernardomattiucci first problem is that your measurement tape is not a reliable reference. I had some with an error of up to 10% per centimeter. Get a high quality set of calipers.