The GraviTrack Solar Marble Machine Kit

GraviTrack is a multi-level marble run desk toy that you can assemble yourself.
Solar version - solarbotics.co...
Battery operated version also available - solarbotics.co...
Our Solar GraviTrack Marble Machine Kit is our newest addition to the Marble-Drop mechanism family. The Solar version pulse-moves the elegant hand-off mechanism that passes marbles to the top of a sweeping multi-level track. You will witness the fascinating step-by-step action of the arms as the geometry changes periodically. Patience is rewarded with the plunk, and rollll of a successful motion cycle. The more light it gets, the more often it moves. It's solar-powered stop-action motion!

[@gaboaaa23]

this is super awesome! But souldnt it be move in a fluid motion?

[@Solarbotics]

it cannot be fluid since the energy is first collected in the cap and then delivered to the motor in short bursts.

[@Solarbotics]

we have a battery version which is way more fluid: kzbin.info/www/bejne/laKscn1qgq2sgpY