The biggest change… the motor mounts. Using a laser cutter, at the TechShop, the whole assembly is now built into the plexiglass chassis. The motors simply zip tie onto the chassis through the precisely cut/aligned mounting holes (easy to reproduce, fast to mount, and no alignment issues). FYI: all the wheels and motors are not mounted on the robot since they need some pre-assembly prep and I didn’t what to have to cut them back off.

The plexi tiers mounted on top of the chassis are stand-ins for the circuit boards. The front and rear tiers will hold the ultrasonic sensors, the middle tier will hold the motor controllers, gyro, and accelerometer it also has a cutout to accommodate a 9v battery to power the micros and sensors, and the top level will hold the master micro controller, voltage regulator, switches and connectors.