Our step-by-step guide to making Floating Pool Speakers for your summer holidays. There is nothing more relaxing than lounging on your lilo and listening to your favourite tunes as they gently float by.
Leaving your child in the hands of a stranger can be disconcerting. Here’s how to make a Teddy Bear Nanny-Cam that will keep an eye on out on your behalf.
If you’re upgrading from an old tube-style TV to a flat screen, or if your current flat screen is just not big enough, why don’t you consider a rear projection screen.
The only way to see IR light (with its wavelength of 750 nm to about 100 µm), is with an IR camera. Now you could go out and buy one, but you probably can’t afford one, and then I’d have nothing to write about. The alternative is to make your own. What we really want is a camera that is sensitive to Infrared light but not very sensitive to normal light. To achieve this you can take an ordinary webcam and remove the IR filter that prevents IR reaching the CMOS sensor. But you will also need an IR pass filter
If you remember the 1970’s, or you were alive, but can’t remember much of it, you should vaguely recall the ubiquitous Lava Lamp. The liquid wax “Lava” mesmerised children and hippies for hours and was probably the craze of the era. You can still buy them, but making your own is way more impressive.
