Building A Generator That Runs Off Hose Power

[Paul Junkin] bought a curious product off the Internet. It was supposed to generate electricity when hooked up to a running hose. Only, it didn’t do a very good job. His solution was straigh…

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Small Steam Generator Creates Educational Experience

Steam turbines have helped drive a large chunk of our technological development over the last century or so, and they’ll always make for interesting DIY. [Hyperspace Pirate] built a small tur…

Trees Turned Into Wind Turbines, Non-Destructively

Trees and forests are an incredibly important natural resource not only for lumber and agricultural products, but also maintain a huge amount of biodiversity in the various types of forests across …

You Can Build A Little Car That Goes Farther Than You Push It

Can you build a car that travels farther than you push it? [Tom Stanton] shows us that you can, using a capacitor and some nifty design tricks. [Tom]’s video shows us the construction of a sm…

Is That A Triboelectric Generator In Your Shoe?

The triboelectric effect is familiar to anyone who has rubbed wool on a PVC pipe, or a balloon on a childs’ hair and then stuck it on the wall. Rubbing transfers some electrons from one mater…

Crank-Powered Train Uses No Batteries Or Plugs

The prolific [Peter Waldraff] is at back it with another gorgeous micro train layout. This time, there are no plugs and no batteries. And although it’s crank-powered, it can run on its own wi…

Generator Control Panel Unlocked With Reverse Engineering Heroics

Scoring an interesting bit of old gear on the second-hand market is always a bit of a thrill — right up to the point where you realize the previous owner set some kind of security code on it.…

First commercial-scale ocean thermal energy generator slated for 2025

In an average day, tropical oceans absorb about 278 petawatt-hours of solar energy. Harvesting just 1/4000th of that energy would supply the entire world's daily electricity – and ocean thermal energy conversion provides a possible method.

That’s Not A Junker… That’s My Generator

If you live somewhere prone to power outages, you might have thought about buying a generator. The problem is that small generators are cheap but — well — small. Big generators are expe…

Open Source Waterwheel

Here in the West, power going out is an unusual event. But in more remote regions like the Himalayas, reliable electricity isn’t a given. A group of local craftspeople, researchers, and opera…

Harvesting Mechanical Energy From Falling Rain

Collecting energy from various small mechanical processes has always been something that’s been technically possible, but never done on a large scale due to issues with cost and scalability. …