Solar Powered Flashlight With No Battery!
Make a flashlight whose energy source is light. Despite not having a battery, the flashlight will work fine at night.
1/16" drill bit
Popsicle Stick Switch
A momentary contact Single Pole Single Throw (S.P.S.T.)
switch that is based on a Popsicle Stick. It is easy to build and the builder learns how a switch works.
Sun Logger
A data logger is a device that is left to run for long periods of time, making regular measurements of external sensors. We’ll be using the Arduino microcontroller and a homemade “shield” (an Arduino accessory board) to create a device that gathers data on light-brightness in an area and how it changes over time.
Solar Spinners for Your Windowsill!
This is an easy-to-build simple solar engine, also known as a Trimmet. We will construct a direct-drive type (as opposed to a voltage-triggered) spinner that will really go nowhere fast in direct sunlight. Perfect for windowsills and desktops that get a lot of old Sol’s rays. Many different styles are possible, but this is a […]
Arduino LED Fuel Gauge
Arduino Fuel Gauge: A few months ago, I hit a pot-hole while driving my 1974 Dodge Dart and my fuel gauge immediately went to “E.” For a split second I thought I lost all of my fuel! My father-in-law suggested I drive backwards over the pothole to fix the gauge. It didn’t work. I researched […]
Digital TV Coat Hanger Antenna
Easily disassemble a coat hanger to make an affordable antenna for your digital television. Stop fighting with your existing antenna and make your own.
