'Almost No Parts' 12/24hrs LED Clock

A 12hr/24hr LED Clock with display control, uses a microcontroller PIC 16F84A or 16F628A and a few parts. (August 25, 2009)
Category: microcontroller projects circuits - Updated: 2014/03/02

Awful Inventions

The plan is perfect! No room for failure. I have everything t... BOOM! (11/10/2008)
Category: from_readers humor funny projects fail - Updated: 2009/07/23

Beakman Motor

A super-simple electric motor. This project already won many school science projects. Useless but extremadely interesting. (7/8/2006)
Category: science projects howto - Updated: 2009/07/23

Building a Lamina Flow Engine

Also called 'Stirling engine', 'Heat engine' or just 'Resonating engine' (11/11/98) (11/11/2008) What I was thinking?
Category: science projects diy homemade - Updated: 2009/07/23

Coin Mechanism for Coin-operated Projects I.

My first try to build a coin mechanism that works with quarters. A low-tech solution for projects that accepts coins to work. (12/25/2007)
Category: projects diy homemade howto - Updated: 2009/07/23

DIY Coin Mechanism for vending machine II

Simple and easy to build. It can be adapted for your microcontroller project. It accepts Quarters and rejects any other coins. (11/26/2008)
Category: projects diy homemade howto - Updated: 2009/07/23

DIY Coin Mechanism for Vending Machine III

'Ladies and Gentlemen, Behold! I present you an improved homemade Coin slot mechanism.' [Great for you MAME project if you don't plan to make a Vending machine] (4/19/2009)
Category: projects diy homemade howto woodworking - Updated: 2009/07/31

Crafts: Bottle Fish.

You won't believe how easily you can make this awesome craft. An enviroment-frienly craft made from recyclable materials: A plastic bottle. (12/05/2007)
Category: homemade diy projects howto - Updated: 2009/07/23

Electric 'LEGO' Motor

As the beakman motor have no torque at all, I decided to buil this project based on the design of the regular electric motors. With a medium difficulty, this motor is able to work with a fair load using 6 volts. (2/7/2007)
Category: lego science projects diy homemade howto - Updated: 2009/07/24

Electric 'LEGO' Motor II

As the previous motor is not easy to build and it doesn't have too much torque, I decided to improve the design. This motor is more like "Pulse Motor" as it pushes the magnets with only one coil. With only 3 Volts, it have three times more torque that the previous one and is easier to build. (2/9/2007)
Category: science projects homemade diy lego howto - Updated: 2009/07/24

Electricity from Piezoelectric materials

Easy experiment that shows how to get electricity from Piezoelectric materials, a clean source of electricity. Also, some interesting applications. (11/13/2008)
Category: science projects circuits discover - Updated: 2009/07/24

LEGO Fan.

Not an automata but this little fan is a "cool" project for hot days. (10/24/2008)
Category: lego projects homemade diy - Updated: 2009/07/23

Fluorescent Light.

How to build a 4-Watts Fluorescent light using a disposable camera, powered by one 1.5 Volts battery. (5/29/2006)
Category: light diy homemade projects circuits - Updated: 2009/07/23

Four Digit Counter

An Easy to build & multifunctional counter with 7-Segment Led Display. (5/06/2004)
Category: microcontroller projects electronics - Updated: 2010/01/19

Free Energy from the Sea.

A simple idea to harvest power from the sea waves. (2/22/2008)
Category: interesting lego projects howto - Updated: 2009/07/23