Warning

You are reading the documentation for an older Pickit release (2.2). Documentation for the latest release (3.3) can be found here.

How to verify the robot accuracy by calculating the distance between 3 points in 3D

This articles discribes an easy way to verify the accuracy of a robot.

First try to get your hands on 2 A4 sheets or 1 A3 sheet. In case of two A4 sheets make sure you attach them accurately and firm to each other as seen in the illustration below.

../../_images/verify-accuracy-paper.png

Lay this paper in such a way that the whole paper is in reach of your robot.

Now point your robot exactly to point A, B and C and on every point write down the coordinates given to you by the robot.

Then calculate the distance between:

  • A and B

  • B and C

  • A and C

by using  this calculator.

Normally the three distance should resemble:

  • A and B: 297 mm

  • B and C: 420 mm

  • A and C: 514.4 mm

If this is not the case, there is something wrong with the accuracy of the robot. In that case further refinement of the Pickit calibration will not lead to a beter accuracy.

If this is the case: Good news! There is no indication that there is something wrong with the accuracy of your robot.