How to find gopigo3 center axis?

gopigo3
#1

Hi all,
I’m trying to find the center axis (axle between two wheels) in order to put Marvel mind GPS beacon on the kart so I can use the data to track the center position. I’m planning to use 3d printed base on top of the acrylic, how do I find which hole is at the center? Is there a document that addresses all the dimensions of the gopigo3?

Thanks

#2

Hi @JOHNZ123,

No, we don’t have diagrams of the GoPiGo3’s acrylics.

You can use the center holes that sit at the edge of the acrylic as the true centers (left/right, up/down). And with a caliper, you should get millimeter precision.

Thank you!

Edit: It seems like we have some diagrams of the GoPiGo3’s acrylics.

#3

The acrylics diagrams HERE might be useful, but a couple things to keep in mind:

  • the center of motion is not constant, and
  • GPS Position accuracies and precision are probably an order of magnitude more than the error of choosing a center by visual approximation.