Robot Room’s David Cook shows how an LED and op amp, along with a resistor and cap, can be built into an amplified color sensor. Unfortunately, even under the best conditions, photodiodes (and reversed LEDs) don’t provide a lot of current flow. The output of the photodiode needs to be amplified for the light-detection signal […]
Living with most of my belongings in boxes and on a super tight ( aka zero dollar) budget I have found that creativity is a must for adding some fling to my spring wardrobe.
Continuing a Math Mondays tradition of building Sierpinski triangles and tetrahedra out of various materials, today we’re going to do it with mailing tubes. The basic unit requires six identical mailing tubes and a piece of cord or twine about 8.5 times as long as the tubes.
Transform plain donuts into squee-worthy treats with this awesome and adorable cat donut tutorial!
At Maker Faire Bay Area 2013, Luke and Adam Iseman spoke about how to make your own micro-scholarship for the students at your alma mater high school, which encourages new makers and honors your favorite teachers. You don’t need a lot of money to make a big difference.
Most people have to keep track of at least a few keys. The easiest way to do that is to just keep them all on one key ring. But the more keys that you have, the more they fan out on the ring. If you have a lot of keys, then your key ring can get pretty bulky and impractical to carry in your pocket. Here is an alternate design for holding and organizing your keys that is a little more efficient.
Make your own beautiful, wearable spray rose jewelry with this simple flower necklace tutorial!
