Lego Chichen Itza

Halloween Decorations: Spiderweb
DIY projects for Halloween, Make your own Spiderweb. A cheap an easy project. (10/30/2008)
Categories: projects diy homemade howto - Updated: 2009/10/07

Halloween Decorations: Spiders

Logic Probe.
An useful and easy to build Logic Probe with Pulse injector. An schematic of a "digital version" is included.
Categories: electronics circuits homemade - Updated: 2009/10/03

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)
Categories: projects diy homemade howto woodworking - Updated: 2009/07/31

Linksys Wireless G USB antenna.
Hacking the Linksys Compact Wireless-G USB adapter model WUSB54CC to connect an external antenna. (10/24/2008)
Categories: computer hack diy homemade howto - Updated: 2009/07/25

How to make a Thermometer
Here is an easy-to-build homemade thermometer using materials available at home. (3/12/2006)
Categories: science projects diy homemade howto - Updated: 2009/07/25

How to Make a Pinwheel.
A simple toy that children like during windy days. (5/27/2006)
Categories: projects diy homemade howto - Updated: 2009/07/25

How To Make a Speaker
A homemade speaker using a plastic cup, business card, wire, magnet and some Lego blocks. I built this speaker from scratch; I was surprised of the quality of the sound. Updated! (6/14/2007)
Categories: diy homemade science projects audio - Updated: 2009/07/25

Halloween Decorations: Ghost
DIY projects for Halloween, Make your own Ghost. A cheap an easy project. Two projects sent by readers included.(10/30/2008)
Categories: projects diy homemade howto - Updated: 2009/07/25

Walking Robot IV.
An improved version of my "solar-powered four-legged all-terrain walking robot" can walk using four legs. Fasters and better movements. No RCX, no NTX or sensors used, Just gears, one motor and solar power. (11/30/2007)
Categories: lego robots homemade diy - Updated: 2009/07/24

A "Walking" Robot
Previous robots are more like a "toy Car", this one walks. (02/07/2006)
Categories: lego robots homemade - Updated: 2009/07/24

Tachometer/RPM II.
This is an improved version of the Tachometer created specially to measure up to 9,999 RPM. Uses a PIC 16F628. (04/24/2006)
Categories: microcontroller circuits automobile homemade - Updated: 2009/07/24

Tachometer/RPM.
Easy to build using only a few components. With some modifications, it can be used in an automobile. This Tachometer uses a PIC 16F628.(06/12/2004)
Categories: microcontroller circuits automobile homemade - Updated: 2009/07/24

Strobe from Flash.
After using a disposable camera, you can build a strobe light (flashing light) with one simple modification. (6/2/2006)
Categories: electronics circuits light diy homemade - Updated: 2009/07/24

Traffic Light.
A two-way Traffic light using a PIC 12F629. As bonus, a traffic light that doesn't use a PIC is included. (05/13/2004)
Categories: microcontroller circuits homemade automobile - Updated: 2009/07/24

Led Chaser.
A sequential light chaser using the PIC 12F629. (04/21/2004)
Categories: automobile diy microcontroller homemade - Updated: 2009/07/24

Ni-Cad Battery Charger with LM317
A simple circuit used to charge old Ni-Cad cells for your electronic project. A solar version of the battery charger included. (3/3/2008)
Categories: electronics circuits homemade - Updated: 2009/07/24

Homemade Compass
Another easy-to-make diy science project. Build a compass for [almost] free! (1/14/2008)
Categories: science project homemade diy hacks howto - Updated: 2009/07/24

Paperclip Compass
A simple and easy way to make a home-made compass using a paper clip and magnet.
Categories: science project homemade diy hacks howto - Updated: 2009/07/24

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