to the stand-astride electric unicycles. These last machines have a bulky battery and controller box atop the wheel, and [Dycus] set his sights on this by transferring it to a backpack with the ...

It wasn't easy, but the Inmotion E20 electric unicycle ($319 ... The E20 also comes with a removable seat, so beginners can ride either standing or seated, making it easier to get on and off ...