Simple Tank Platform

This is a simple differential drive, treaded platform for toy/robot base. It uses 2 standard TT motors and 3D printed treads (TPU). The design is largely symmetric, and can thus drive upside down as well.

Additional parts required:
- (2x) TT motors (https://www.adafruit.com/product/3777)
- (4x) 8x22x7mm bearings
- (4x) M3x30 bolts
- (4x) M3x10 bolts
- (8x) M3 nuts
- Drive electronics, batteries, remote control

Print 2 of each part, except for base/base2 (print 2 total) and tread1/tread2 (pick one). Embed bearings while printing into cup and idler. Then press-fit cog and idler_shaft, respectively. Use the slots in the idler_shaft to tension the treads.