Working with Relays: an Introduction and Example

Submitted by ceruleanplains on August 22, 2008 - 7:29pm.

The objectives of this tutorial are to familiarize members with relays; produce an example solderless breadboard circuit using a relay and a DIP switch; and provide an example using a PCB board,

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$50 Robot - Sonar Upgrade

Submitted by pomprocker on July 17, 2008 - 3:54pm.

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Motor Controllers

Submitted by Webbot on July 3, 2008 - 2:21pm.


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A Modular PCB Layout

Submitted by krich on June 30, 2008 - 2:49pm.



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Submitted by superchiku on March 31, 2008 - 7:53am.

Hey all, this is my first tutorial where iam going to write something about how to make your own PCB's ,so if iam wrong in any way or if you see any mistakes in my tutoria

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Simplest possible IR bumper

Submitted by Steel_monkey on March 16, 2008 - 3:03pm.

This tutorial describes simplest possible IR obstacle avoiding sensor. Bumper can tell, if there is an obstacle in front of it, but it can not measure distance.

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How to Smart Battery Monitor - DS2438

Submitted by TrickyNekro on March 13, 2008 - 1:01pm.

First of all, I DO NOT advertise any product, but I was really amased by capabilities of the IC...


Just an idea on what we will be working on... Enjoy the vid!!!


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Electronic Book Combination Lock

Submitted by airman00 on February 29, 2008 - 4:03pm.

I'm sure you have all heard of the trick in movies, where someone goes into a hidden room , which can only be opened by pulling out the correct book from a bookshelf.


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Prototyping Circuits with Veroboard

Submitted by hazzer123 on February 24, 2008 - 8:39pm.

What is Veroboard?

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Submitted by airman00 on February 21, 2008 - 11:16pm.


Here is a brief explanation of comparators .



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