Mini Autonomous Tracked Robot(3d Printed)

This little n20 powered ATTiny85 controlled robot uses a IR trigger to move around autonomously. All parts except electrical and fasteners are 3d printed .
chapters-
Program : 7:54
wiring: 10:07
assembly: 12:06
STL files( parts list and program) : https://www.thingiverse.com/thing:5924472