DIY 3D Laser Scanner Using Arduino

The principle behind this scanner is the typical of a line scanner. A laser beam intercepts the object to be measured and a camera, positioned at a known angle and distance shoots a series of images. With some trigonometry considerations and optic laws it is relatively easy to reconstruct the... Read more »

Bottle Radio

Crystal radio technology has been around for many years. This “bottle radio” take on a crystal radio requires no power source, operates on the power from radio waves, and receives signal from a long wire antenna. As radio stations slowly move away from the AM band, the “window of opportunity”... Read more »

Rustic Wood Side Table

I had a dying madrone (Arbutus menziesii) in my backyard. Looking at its structure, I noticed a nice 3-pronged junction of branches a few feet above my head. I thought this would make a nice tripod base for a small side table, so with a bit of trial and error... Read more »