Added calls to set_voltage so that motors move and stop

[shane-powell]

Nothing seems to happen in the example if voltages are not set so have added calls to set_voltage.

Also zero the voltage at the end to prevent unexpected movement when starting a new script up.

[Gadgetoid]

Good catch- thank you! I wonder if this should happen automagically in the library so that some base voltage is set, or if I should just add some - gasp - documentation for this :D

[shane-powell]

Perhaps make forward and reverse go full speed by default then have an optional parameter to set the voltage.

It would be cool if it worked similarly to how the explorer hat works as that's what I am using it in combination with.

Some documentation would be good. I was scratching my head for a while over the weekend wondering why it wouldn't work. Then found the set_voltage function and woosh!