You probably well know of the focus that the world has been giving to alternative energy. And I am sure schools are now pushing more ways to power our electronics than ever.
Which brings us to this awesome DIY that shows you how to build a salt-water powered LED light. You can also substitute lime juice for the salt-water.
Also see:
I’ve been meaning to get a USB solar charger/battery pack but luckily, MiniInTheBox.com sent me one for a review couple weeks back. Anyways, this thing is pretty awesome, it basically re-charges itself when there’s even any hint of light.
How powerful is it? It’s rated at 2600mAh, meaning you can probably re-charge your iPhone/Android smartphone/Blackberry twice fully.
Besides that, it also comes with an AC adapter s
We’ve seen a plenty of weird batteries/gadgets, including lemon-powered batteries, potato-powered MP3 Player, candle-powered batteries, vibration-powered batteries,
For those of you who use a lot of batteries, how about using these AA batteries that can be re-charged via USB?
Just make sure you get a large USB port if you want to charge a lot of these.
Get the a pack of 4 on Amazon for $32.95 or
You might remember the “water-powered” batteries from Japan about a year back. Well, if you thought that was innovative, check out Brother’s new invention, vibration-powered double-A batteries that can be used for low-voltage gadgets.
I know for a fact that this would work really well for kid’s toys where shaking often occurs anyways, this could be ground-breaking, saving a whole lot of energy worldwide when it debuts.
This time, Brother Industries prototyped the genera
HTC Evo 4G Extended Battery is now available for pre-order on Amazon from Seidio. This gigantic battery boosts your battery life by more than 200% with its 3500mAh capacity, more than double your stock 1500mAh battery.
It also comes with a new back, probably making your Evo 4G a lot bigger and a bit heavier but for those of you who don’t mind the bigger size, the solution is here.
For those of you trying to build an automatic battery charger for your next project, take a look at this project as free schematics are provided for all your auto-charging needs and for reference.
Natural disasters have caused a ton of damage to home owners, businesses, and even the government. For floods, the Department of Natural Resources of Australia and Penguin Labs have devised a DIY flood-triggered automated camera system that would takeimages of a cave flood (when it floods) in order to study the water flow and how it affects the environment. Mainly, a “water switch” is used to detect water in the device with solar power to keep the device charged with power.
A water flow gauging station was onc
For those of you who have bought an ASUS UL30A, UL30Vt, or UL30Jt, you can get a replacement battery for about $90 on eBay.
