Expandable Tracked Vehicle

This is a 3D-printed tracked Vehicle. It is designed based on the concept of building blocks, so it can be applied to different main control boards and can also expand different functions/modules. The profile "Chassis Module" contains all the 3D-printed parts required for a complete chassis. You need to prepare 2 TT motors, 4 M3x25mm screws, 4 M3 nuts, and 2 M2x8mm self-tapping screws. Screws and motors can be purchased in the Maker's Supply, but please pay attention to whether the plugs are compatible with the main control board you are using.

The design of the tracks adopts the concept of print-in-place, which can significantly reduce the assembly steps. Each track can also individually wrap the wheel hub, forming a complete wheel.

I'm using a micro:bit main control board, so I've also provided the parts for assembling the micro:bit. If you're using a different main control, you can refer to my assembly  dimensions of the holes and pins to build your own building blocks. Additionally, there are positions reserved for installing some components at the front of the vehicle, and these are also M3 screw holes that have been pre-set.

Some references on the ways to play with it:

Chassis Assembly:

Printing Instructions:

Printing does not require the AMS.

There is no need to set up supports.

After the printing is completed, just remove the support parts that have been pre-designed in the 3D model.

Profile 1: "Chassis Module" contains all the 3D-printed parts required for the chassis. You need to prepare 2 TT motors, 4 M3x25mm screws, 4 M3 nuts, and 2 M2x8mm self-tapping screws.

Profile 2: "Connector for microbit" contains the 3D-printed parts needed for connecting the main control board with vehicle. The main control board used here is the micro:bit, and the expansion board is the robot:bit.

Tips:

After the tracks are printed, move them flexibly and fully first before assembling them onto the chassis. This way, you can achieve better results.