Hot Wire Cutter

Cutting foam or polystyrene sheets with scissors or a saw is an unpleasant task, but with a hot wire, these materials are easy to slice through. You can buy hot wire cutters for just a few thousand forints, but it’s also easy to build one yourself using the transformer from an old reading lamp, a … Read more

Houses on Chicken Legs

Architects have been interested in mobile buildings since the end of the 19th century. In nature, most things move in some way, whereas traditional architecture creates rigid, static things out of stone, wood and, more recently, steel and glass. There have been various attempts to bring buildings to life in some way, one trend being the revolving house.

Effortless Component Testing

Anyone working with electronics will eventually hold a component that you need to identify—what it is, how its legs connect, if it’s the right value, or whether it works at all. Testing with a multimeter A knowledgeable person can learn a lot even with a basic ohm-meter. Some multimeters include diode-test or transistor current gain … Read more

Building the JYE Tech DSO 068 Oscilloscope

The JYE Tech DSO 068 is a do-it-yourself oscilloscope kit that’s easy to assemble. Anyone who can solder well, has some basic electronics knowledge, understands a little English, and owns a digital multimeter can confidently take on the task of building it. The kit’s list price is $79 (around 23,000 HUF at the time of … Read more

Hot Ice

As I write these lines, there is half a metre of snow under the window and it is -10°C. The sunlight is playing nicely on the bruised trees, but the cold is evil. If we have to get out of our gloves, our fingers quickly get cold, our skin starts to burn. The blood circulation to the back of the hand deteriorates rapidly, and the gloves are of no use. It’s better to put your hands under a coat or use a hand warmer.

Electric Fence Tester

This gadget is actually a continuation of the glimm lamp project. No, I don’t keep horses or deer cattle, so I don’t have a light bulb. However, I do run into electric shepherds while walking through the woods, and it makes me wonder whether or not there is a jelly in it. This thing, which is barely bigger than a pocket knife, is designed to find out.

From Orange Glow to Logic Flow – The World of Glow Lamps

I’ve always been fascinated by gas-discharge lamps. I don’t know why—perhaps simply because they glow in the dark. Or perhaps because they don’t always shine with a steady light, but sometimes flicker a little, as if they were alive, or burning like a flame. Or maybe because it seems as though the light is created … Read more

Hitler’s Goldfish

It is not widely known that Hitler was a vegetarian, and even fewer people know that he was also an animal welfare advocate. Allegedly, the idea to ban bowl-shaped aquariums originated with him, as he believed it was animal cruelty that the fish had no corners to hide in and that the bowl distorted the … Read more