Walk and Code

Here is an interesting idea how you can walk and code at the same time. I just saw this at 8th light Walk and Code blog posting. The idea comes from WalkStation, an adjustable height desk with a treadmill underneath. The solution presented on the blog is cheaper is more DIY model based on treadmill


This is a really neat trick I just read about. LackRack is the ultimate, low-cost, high shininess solution for your modular datacenter-in-the-living-room. Its low-cost and perfect fit are great for mounting up to 8 U of 19″ hardware, such as switches (see below), or perhaps other 19″ gear. Featuring the LACK (side table) from Ikea,

Extremely simple stepper driver circuit

The normal way to drive a stepper motor is to use switched-dc voltages to energize the stepper motor coils one by one after each other. But a stepper motor will run off ac lines if you introduce a 90° phase shift between the voltages applied to the motor’s two windings. The extremely simple circuit in

Lego router and PC

Luke’s Weblog shows how LEGO blocks can be used to build the case for a WRT54GL wireless router and a PC. Lot’s of normal LEGO blocks and lots of work is needed to build those projects. The postings are is filled with goof pictures and videos how those fun projects were built.

Microphone powering ideas

New Line Techtalk Phantom Supply web page shows how to build a very simple design for a phantom supply. Now since the question was for a simple phantom supply, fed by batteries, the choice was made to use two 9V batteries (since a lot of microphones can be run from phantom voltages as low as

DIY fiber optic microscope

Fiber optic microscopes are used to inspect connectors to check the quality of the termination procedure and diagnose problems. A well made connector will have a clean, smooth, polished and scratch free finish. There is not be any signs ofcracks, chips or fiber not even with the ferrule front. The magnification for viewing connectors can

Fiber optic testing ideas

When working with fiber optics, you need some special tools to check fiber connections. Continuity checking makes certain the fibers are not broken and to trace a path of a fiber from one end to another through many connections. You can use a visible light “fiber optic tracer” or “pocket visual fault locator“. It looks

Christmas-tree light testing

Simple tester checks Christmas-tree lights article gives you ideas how to test mains powered Christmas lights. The article presents a simple test circuit. Some more testing ideas can be found at Christmas Lights and How to Fix Them web page. LED lights are becoming more and more popular for common in Christmas lights for many

Computerized christmas lights

Do It Yourself Computerizing web page gives idea how to control christmas lights using PC. This web page presents several different technologies to use computer to control lights. If you are interested in the topic after this, it is a good idea to go to Home Automation forum and read the articles archive there.