Stirling Engine Kit
The Stirling engine is a fascinating device. This engine can be powered by any heat source: combustion, nuclear, solar, or even the heat of your hand! This kit does exactly that. Place it on your hand and it will start rotating. It provides very little power, of course, but this kit is excellent for explaining [...]
Home Biodiesel Plant
Lots of websites exist with instructions on how to make biodiesel yourself from vegetable oil. To the uninitiated, this can be a quite dangerous undertaking, since it involves methanol (wich is very flammable and toxic) and sodium hydroxide (wich is incredibly corrosive and can cause the most horrible chemical burns you can imagine). The following [...]
Wind powered cellphone charger
For those among us who like to go camping but don’t want to withdraw completely from civilization, this is a must have. Mobile phone operator Orange has announced a wind-powered cellphone charger, as part of their sponsorship of the Glastonbury festival.
This small wind turbine can be mounted on a tent. It charges a battery, wich [...]
USB Battery Charger
Of all the gadgets to plug into your USB port, this one is another quite useful one. This charger plugs into your USB port and can charge two AA or AAA batteries. It draws its power entirely from the USB port. Desktop widgets are included for Windows and Mac OS to check the charge status. [...]
USB-Cell Batteries
If you are into gadgets, you probably have a load of rechargable batteries. I don’t even know how many sets I have. I use them for my MP3 player, the lights on my bike, my Wiimote, digital camera, wireless keyboard and mouse, flashlight, and probably a few other things. These batteries, wich come in AA [...]
