This allows you to stack sensors at the same location over the wheel instead of trying to position them along the circumference. Directional timing holes will produce a second set of holes that are 90 degrees out of phase with the first. See the compiler output for helpful information about the distance indicated by each timing hole. Use the padding parameters to adjust the location of those holes. The rim also supports rotary encoder timing holes for wheel feedback. Keep this in mind when you’re using tires - as an example, the rim height should not be smaller than the radius of o-ring tires. Installed tires (such as o-rings, rubber bands, etc) are set into grooves carved out of therim, while trads are added onto it. The rim sits at at the outside of the spokes and supports the tires or added treads.
tireCSDiameter: Cross-sectional diameter (CS) - How thick is the tire rubber?.wheelWidth: The width (or thickness) of the the wheel.If you’re not using any tire at all, set the tireCSDiameter to zero. If you’re using o-rings, the tireCSDiameter should be the cross-section diameter of the o-ring, or if you’re using some other flat tire material (such as rubber bands), jsut specify the its thickness. In this section, specify the properties of the tires you’re using, and this will define the diameter of the wheel. The source file is available at, or on github at. In these cases, services such as Shapeways could come in handy. It’s important to note that you can configure this wheel to such an extend that it may not be printable at home with extruded plastic printers. Highly Configurable Parametric Robot Wheel – Hub and Rim Styles Highly Configurable Parametric Robot Wheel – Spiral variation Highly Configurable Parametric Robot Wheel – Spoke Styles Highly Configurable Parametric Robot Wheel – Tread Styles Highly Configurable Parametric Robot Wheel – Biohazard variation
#Openscad spiral full#
For example, as shown in these images, the Spiral style can be used to create a variety of interesting designs that you might not think of when you think “spiral.” After the images you’ll find full details on the parameters. Plus, I’m still adding features as I think of them.įirst, here are a few images of the types of the various basic elements, as well as a few variations that show the flexibility of the designs. It includes twelve tread patterns (all configurable in often surprising ways), eight core spoke patterns (also highly customizable), configurable support for o-rings, bands, and even optical encoder timing slots (directional and non-directional), and a lot more. I recently decided to combine them all into one massively configurable wheel model, and add a number of new features as well. The result is an OpenSCAD file with 46 parameters that provides a limitless set of combinations and wheel designs. OpenSCAD CheatSheet OpenSCAD v2021.I built a framework for robot wheels a while back using OpenSCAD and used it to create a few different wheel styles.
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