Do-it-yourself projects and technology updates

Monday, December 19th, 2005

Ten most needed circuits for the DIYer

I have decided to compile a list of the top ten most needed circuits that are a must know for anyone interested in DIY projects. These are the basics that can all be interchanged and used in conjunction with each other to make many of the projects that we all love so much. 10. The [...]

Sunday, December 18th, 2005

12v power supply

There is always a need for a good power supply. Here is a schematic for a 12 volt power supply. Note this could also be done with a 7805 5v regulator, and a “T1 12.6 volt, 1.2 amp ac transformer” . The transformer brings the AC 120v down to around 18v, and the 4-diode rectifier [...]

Saturday, December 17th, 2005

Cheap LEDS

I was at Radio Shack the other day, and priced the LEDs, and saw that they were like a dollar a piece. That is a rip off. Every good DIY project requires LEDs, and here is an article that shows how to take the new LED Christmas lights, and get enough to last a long [...]

Thursday, December 15th, 2005

DIY Cheap 5v power supply

Here is an awesome project for that worthless computer power supply you have laying around. I was doing a project the other day where I needed 5 volts, and I connected a 9 v battery to a 5 v regulator. I connected something wrong, and it made it really hot, and it burned myself. I [...]

Friday, December 9th, 2005

Circuit Symbols for Noobs

So you have no idea what you are looking at when you look at circuit diagrams. Well today your in luck. Circuit Symbols With this you will be able to identify different components on a circuit board allowing you to actually know what you are looking at. Posted by Utch (Thanks Utch, this article was [...]

Monday, November 21st, 2005

Solder with toaster oven

Here is a DIY project that lets you solder those tiny surface mount pins on a microcontroller. You can use solder paste on the board. You place the component exactly in the right location, and then stick it in your toaster oven. It will activate the solder in the paste, and it will ball up [...]

Saturday, November 19th, 2005

DIY small motor

Here is a howto article on making a small magnetic coil motor. I actually tried to make one of these when I was a little kid. I saw it somewhere, and of course it did not work. I see the trick that I missed. You have to have insulated wire, and have to scrape off [...]

Friday, November 18th, 2005

DIY Circuit Board

Well, once as a freshman in college at Auburn University (War Eagle, that is just for our big game coming up against Alabama), I wanted to make an expandable memory circuit for my TI-89 graphing calculator. I actually learned to program in high school by playing with an old TI-82. Let me tell you, knowing [...]

Thursday, November 17th, 2005

Line sensing circuit

Here is a simple circuit that can be used to detect a black line in a DIY line following robot. The R1 and R2, need to be picked so that the current or voltage across the LEDs do not go over the specifications of the components. You can use the simple equation V=I*R. V=voltage accross [...]

Saturday, November 12th, 2005

Build your own Microcontroller programmer

Well, this is a pretty neat DIY project. Not super useful these days when you need USB. I have a laptop, and that is all I have. Otherwise, here is a project so you can build your own microcontroller programmer. It is neat just because it can be done, and maybe if you make your [...]

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