Tracked base for small robots

thingiverse

Print this smallest tracked base with ease using our detailed instructions! The design features two mirrored halves, each housing its reduction gearing and motor. All you need are motors and 4mm threaded rods; the rest is printed or filament-based. To find suitable motors, repurpose those from old CD-ROM/DVD-ROM drives. Keep the small screws that secure the motor in place as they'll be necessary. The .blend file provides two layers: one with an assembled half and another with parts arranged for printing. Feel free to rearrange the printing layout based on your printer size. When exporting STL files, netfabb them before slicing. Print all extra gears provided, as their small sizes may affect print quality when printed in smaller quantities. The recommended print settings include 20 mm/s perimeters, 10 mm/s small perimeters, and 40 mm/s infill at 180 degrees for gears (first layer at 185). For the case, use 40 mm/s perimeters, 20 small perimeter, and 60 infill at 185/195 degrees. Use pins made from filament pieces (1.75-2mm) for small gears and connecting track links. Print three sets of track links per side, with each set containing 30 links; this number may decrease if you add more rows. Soft PLA is suitable for tracks, but normal PLA works too. Mount the output gear and track pulleys using 4mm threaded rods and embedded nuts. As for vitamins, gather two 125mm and two 45mm 4mm threaded rods, two CD-ROM motors (Mitsumi R-14 1425), and 26 nuts. Lastly, note that Slic3r 0.72b is required for proper gear slicing; newer versions may cause issues. Alternatively, use Cura for successful gear printing. This design is now marked as complete, with a working prototype showcased in the provided pictures, and a YouTube video to follow.