Here’s a video of my very hackable 12-channel logic level shifter/translator with a voltage regulator. This video demonstrates how it works. There’s more detail here at the post. In this example, it’s translating from 7.5V to 3.3V. In another example…
40-pin female headers are inexpensive and easy to trim down to size, and with a dot of CA glue (super glue), you can even easily make other configurations, like 2×4. Sometimes they’re even described as “break-away” headers, although admittedly they…
He we’re test-driving the our latest robot creation for the first time. It’s the boy’s design and made mostly of wood. The tires are o-rings, and there’s a 12V AA batter pack sandwiched between the two pieces of plywood. The…
Math Monday came early this week, and we had some fun exploring Reuleaux triangles. Next to a circle, they’re the simplest curve of constant width you can make — that basically means you can roll a plank on top of…
In celebration of Independence Day here in the United States of America, here’s a great 10-minute narrated animation that reviews how the nation got to where it is today. Read the instructions, click the X, then click Play. Videos…
If the hot shoe (flash mounting point) on your Canon Digital Rebel camera is loose, then your flash might not be stable on the camera or operate properly. It may not be immediately obvious how to fix it. This video…
This is a video with some puppets in it. There’s not much else I can say about it, other than that it is quite possibly the greatest work of visual art ever to exist.
I ran across this ad for Lufthansa today at Die Welt. It got my attention — the whole web page fell off the screen. I almost wish I’d caught it while the content on the site still matched the image.