What do you do with all those trading cards you have lying around your house? I put them in boxes and forget about them. But the artwork is cool, I wish there was a away to display them… Enter the Sola(r)Dex

The concept of the Sola(r)Dex is to combine a solar panel (photovoltaic panel, PV), a DC motor, capacitors wired in parallel, an analog circuit with MOSFET as a switch, and a cylindrical carriage to randomly cycle through a set of card.

The PenduLight, a journey form inception to artifact.

The TL;DR of it all is about $21.00 a month. Now the questions really is how did I get to that number.

The misalignment between the arms causes the tension of the bearings to be very off creating binding for half of the rotation and looseness on the other half of the rotation.

The basic concept is to capture the path of the plumb using an LED and a long exposure from a dSLR.