Based on the COZMO accessory Treads this print out is a modular element to build an easy robot. Use Mini Servos like the common SG90 and an arduino nano or an arduino mini to power up your tracked vehicle.
Invert the second print to get the left track modul.
1) Glue the Servo Motors to the treak anker plate.
2) Use a short nail or metal pin, to connect the small wheels to the treat anker plate.
3) Connect the two, four or six track modules with a metal plate and screws.
4) Use an Microcontroler to power up your Robot with interesting functions.
2 mounted track modules