Sheet metal screws Archives

Electronics: Fun and Fundamentals — LED Photo Lights

Easy, efficient, and effective.

Lumia Lunchbox Laser

Back in the 1970s, my friend Wayne Gillis and I used to do light shows at science fiction conventions. We had the usual panoply of overhead, slide, and custom-made projectors, and a single, very expensive, helium-neon laser from Edmund Scientific. Calling ourselves Light Opera, and later, Illuminatus, we performed at ConFusion conventions in Ann Arbor, […]

PVC Two-Faced Clock

If you and a friend or relative live in different time zones, keep track with this two-faced clock.

PVC Kids’ Table and Stool

This small table fits young kids perfectly — and they can scribble to their hearts’ content on the dry-erase tabletop.

Lunchbox Laser Shows

Back in the 1970s, my friend Wayne Gillis and I used to do light shows at science fiction conventions. We had the usual panoply of overhead, slide, and custom-made projectors, and a single, very expensive, helium-neon laser from Edmund Scientific. Calling ourselves Light Opera, and later, Illuminatus, we performed at ConFusion conventions in Ann Arbor, […]

Solar Food Dryer

If you’re growing your own fruit and vegetables, or just trying to eat food that’s produced locally, you come across one obvious problem: when something is in season, you have more than you can handle, and then there’s nothing for the rest of the year. The obvious solution is to preserve your food when you […]

Radar Speed Detector

Turn a Hot Wheels toy into a versatile
radar gun.

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