This chassis base plate is a round piece of 1/8" (3 mm) acrylic with a 5" (127 mm) diameter and cutouts for building a differential-drive robot chassis based on our micro metal gearmotors and 42×19mm wheels. The chassis has assorted general-purpose holes and slots that support many configurations of sensors and other robot components.
These white plastic wheels have rubber tires measuring 42 mm (1.65?) in diameter and press-fit onto the 3mm D output shafts on many of our motors, including our micro metal gearmotors and our plastic gearmotors with 3mm D-shafts. Teeth on the hub optionally allow a reflectance sensor to be used for encoder feedback. These wheels are sold in pairs.
These white plastic wheels press-fit onto the 3mm D shafts on many of our motors, including our micro metal gearmotors and our mini plastic gearmotors, to make a nice drive solution for small robots. The wheels have silicone tires and measure 60 mm (2.36?) in diameter. Two additional mounting holes for 4-40 screws make it possible to use the wheel with several of our universal mounting hubs.
This two-part aluminum assembly mounts directly to 4 mm diameter motor output shafts like those on our 25D mm gearmotors and allows you to drive most scooter, skateboard, inline skate, and other common wheels that are compatible with popular 608 ball bearings.
The m3pi expansion kit contains everything you need to turn your 3pi robot into an enhanced m3pi robot. The expansion PCB ships with all the surface-mount parts populated, but the included headers, buttons, and connectors must be soldered in.