DIY Geiger Counter

August 31, 2010 by Chris
Here's another great analog project: A DIY Geiger Counter. The parts are all, for the most part, off the shelf and easily assembled together. The project write-up is extremely detailed with everything you'd need.


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Fading LEDs Analog Style

August 29, 2010 by Chris
Since we've become to accustom to using PWM to make LEDs fade in and out, we forget about our roots in the analog world. This project & write-up gives a straight forward circuit and a good explanation of it's operation to those of us whose analog skills are a little rusty. Fading LEDs...they are just somehow simply amazing.


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Classic 2N2222 FM Transmitter

August 25, 2010 by Chris
Anyone who has been around circuits long enough has at one time or another stumbled upon the simple 2 transistor FM transmitter. For nostalgic purposes I've put it up today. The quick post explains how to build it and also goes over some of the less obvious factors about FM.


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Alarm Motion Sensor Switch

August 24, 2010 by Chris
I'm sure we've all seen the security motion sensors in the corner of the walls of our arch-enemies' homes, so why not learn how it works? This project takes a look at how to use a PIR motion sensor to switch on/off virtually anything, from an alarm to water sprinklers!


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120V LED Night Light

August 23, 2010 by Chris
While it might seem to be a terribly obvious design, a night light that runs off of AC 120v is still worth taking a look at. The circuit, construction, pcb board & layout are all in the project write-up. Make one for your child today!


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Homemade PCB (Etching)

July 8, 2010 by Chris
This tutorial guides you through the toner transfer process of making a 1-layer PCB board. The board made in this example is a simple 1.2v - 2.5v - 3.3v - 5v power supply board. There are many pictures and videos to help guide you through the process.


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Net Power Strip

June 2, 2009 by Chris
The Net Power Strip is a cool little project that shows you how to build an electric power strip that you can control via the internet. It uses analog relays for power switching. Hardware schematics included in the project write-up.


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Digital Thermometer Display

May 24, 2009 by Chris
This project is probably more novelty than useful, but its simplicity will get you familiar with digital thermometers. A pic is used to interpret output data and a gigantic LCD display is used to show it to us humans. Software and hardware schematics are there just for you!


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40W FM Broadcaster

May 12, 2009 by Chris
The the 40w fm broadcaster is a very powerful FM range audio amplifier. The project write-up is very detailed with a standard scientific method style. Not for RF novices (but take a look anyway!).


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Hardware Temperature Sensor

May 8, 2009 by Chris
This quick project shows you how to take I2C output from an Analog Devices temperature sensor and display it on an LCD. All this is done with an ATMega. Not to worry because the software and hardware schematics are provided in the write-up!


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