Pololu Universal Aluminium Mounting Hub for 5mm Shafts - M3 Holes (2-Pack) Brand_UUGear Once the serial port is

Once the serial port is created

PWM control

two USB ports

and external interrupts

The finished product looks and feels great - so we couldn't resist going all out on the build quality by adding a custom matt black anodised aluminium case with a handy wrist strap

Pololu Universal Aluminium Mounting Hub for 5mm Shafts - M3 Holes (2-Pack) Brand_UUGear Once the serial port isThese Pololu universal aluminium mounting hubs allow you to mount custom wheels and mechanisms to 5mm diameter motor shafts. The set includes two hubs, two M3 set screws for securing the hubs to motor shafts, and one 1. 5mm Allen wrench for use with the set screws. Each hub has four threaded mounting holes for M3 screws (not included). We have an assortment of universal mounting hubs available, spanning several shaft sizes and featuring mounting holes