This may not be the most efficient sun tracker, but it sure is simple. This is a really clever way to make a sun tracker, and here is how it works: The small cell provides power to the motor directly. If there is no sun, or night, the motor is not going to work. The […]
Here’s a cool design for an LED pen using an old mouse enclosure – I meet Lori Stotko and Stuart Nafey http://lightdoodles.com/ at this years Makers Faire Auditions. They had these cool Light pens they had made to doodle with. I decided to make some when I got home, and remembered the old Sun three […]
Use sunscreen to remove the UV coating on aging eyeglasses.
