![]() ![]() The clever bit is how the BBs are fed into the groove. Just watch the video below - it explains it far better than words can. BBs are fed into the groove at the right position to form characters, which move upwards as the cylinder rotates. The cylinder rotates inside a cage with vertical bars the bars and the grooves are sized to trap 6-mm AirSoft BBs, which are fed into the groove by a port in the stationary base of the display. The core - literally - of ’s design is a 3D-printed cylinder with a spiral groove in its outside circumference. But it’s pretty cool, so we’ll give it a shot. Such is the case with this marble-raising dot-matrix alphanumeric display. But sometimes we stumble across one that’s so unique that we lack the basic vocabulary to describe it. Don’t get us wrong - we love unique displays as much as anyone.
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