| Here is a simple circuit that measures changes in skin resistance. You can use it in a playful way as a lie detector. An ordinary ohmmeter i...
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| Many people would like to build an anemometer, but they dread tinkering with mechanical devices. Here a solid-state variant.
| The Greeks have a long history of innovation and a zeal for learning. Marios Lazos is an Athens-based electrical engineer who is passionate...
| Wouldn't it be handy to have a flashlight that turns on automatically when you pick it up? Well, this small circuit will make your wish come...
| Many projects are begun after an innocent question from a nephew, friend or neighbour. This is such a project: āCan you make me a clock that...
| There is nothing quite like sitting down for a tasty beer and, in moderation, it is a pleasurable pastime. Here's a small circuit that - sub...
| Near-sighted people know the problem all too well: reading the time during the night is difficult or even impossible without first putting o...