Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
?
(Or alternatively keep the spacing so that acceleration limit will prevent you from reaching too high a velocity)
undefined
Just use SIG and GND, and leave the 5V pin not connected.