Water heater repairs

Our water heater was doing something weird. A valve on the side, with a tube running down from it was leaking very hot water onto the floor. We turned off the water to the water heater to prevent a major catastrophe.

According to the owners manual, the valve is a safety valve that opens up if too much pressure builds up in the water heater. This happens if the water overheats and can be very dangerous. 55 gallons of almost boiling water could drain onto the basement floor.

My particular water heater has two heating elements, an upper and a lower, each one has it’s own thermostat. The upper thermostat also has an over temperature sensor, like a circuit breaker, but heat triggered. It had tripped because when I pressed the reset button, it clicked.

I was concerned this happen again, so I monitored the water temperature. After a few hours, the water became unbearably hot, even on the lowest settings.

I decided that something must still be broken, and turned off the water. I also switched off the water heater at the circuit breaker. The circuit breaker was labeled by the prior owner, so it was easy to identify.

My appliance parts specialists suggested I bring in both thermostats, so they can find the correct replacements.

Taking photos before unscrewing anything, I removed both thermostats. They were easy to tell from the heating units because they were plastic boxes pressed onto the water tank, where the heating elements looked like giant bolts, screwed into the water tank, with wires coming out.

While the thermostats were out, I noticed that the temperature knob for the upper unit made a distinct click when turned, while the lower unit turned very smoothly. The parts specialist couldn’t tell me which one was broken, and only had the lower unit in stock, which I purchased for $17.00. The upper thermostat, I could order for $34.00. I decided that I would try just the lower unit, then order the upper unit, if needed.

After replacing the lower unit and reinstalling the upper unit, I turned on the power. A few hours later the water temp stabilized. The repair was a success.

Apparently, thermostat failures are pretty common. I found both the upper AND lower thermostats at my local hardware store, for about 1/2 price.

So here is what I learned:

  • Turn off the water
  • Turn off the electricity
  • Clicking thermostats that feel like they might be broken may actually be a good thing
  • Smooth turning thermostats may be a bad thing
  • Check your local hardware store, before your parts specialist.
These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

Alternative power brainstorming

Brain-storming is where you list any idea that comes to mind, no matter how wild or insane it appears.

Here are a few alternative power ideas that we came up with, that now do not appear to be quite that far off:

1. Store lightning. Two problems, you’d have to control the lightning strike and then have somewhere to store it.

I just read on Gizmodo, “Scientists Use Lasers to Create Lightning“. Essentially, they strike a cloud with a laser beam, ionize the air, which initiates a lightning strike.

EEstor, a Texas company, is building capacitors that are claimed to have nearly twice the energy density of Lithium-Ion batteries. They could drive a car for 300miles on a 5 minute charge. The EEStor’s only disadvantage is that today’s household wiring is unable to supply the needed current. I bet a bolt of lightening just might do the job.

2. Use solar power to create a chemical fuel similar to gasoline, rather than electricity.

This isn’t quite the same, but interesting none the less. Ecogeek.org has this article, “Could Chemical Solar Power beat Photovoltaics?“. Professor Chaurasia of the University of Birmingham, UK, is developing a process in which propanol is dehydrogenated, the hydrogen then generates electricity using a Proton Exchange Membrane fuel cell. The byproducts then recombine and begin the process again. I don’t know if this is as efficient as photovoltaics, but it might be another way to generate electricity.

3. Windpower. Most of the home-built wind turbines use permanent magnet DC generators, because they are cheap and easy to acquire. This is not the best way to generate electricity, especially as the current increases.

This company, Swift Wind Turbines, has a 1.5kW, 240 VAC, wind turbine that uses parts made locally. I’m very interested in this, except that it connects to the power grid, which indicates that it is most likely and asynchronous induction type, which can’t supply power unless the grid has power.

It occurred to me that you could use a wind turbine to drive both a permanent magnet DC generator and a moving field coil AC generator (Alternator). The current from the DC generator would only power the field coil of the AC generator, so the DC generator wouldn’t have to supply that much current and wouldn’t have to be that big . The AC generator would supply the usable current and could be direct wired (no sparks, no arcs). This arrangement should allow a low wind speed startup, with increased output power as RPM increased, because the power from the DC generator would increase, increasing the power in the field. The increased field would increase the output power. Also, as the field power increases, so would the back torque from the AC generator, slowing the rotor speed. Essentially, the RPM would be self regulating, while the power increases.

The Danish Wind Industry has a fantastic website related to wind generation, windpower.org. They should know, they produce a higher percentage of their power from wind than any other nation. Currently, 20%.

It will be interesting to see how these turn in a few years.

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

WordPress plugins

WordPress is the software I run this, and several other websites on. One reason I like WordPress is it’s plugin structure. Plugins add features and functions to your website. Here are my favorites:

All In One SEO Pack is a complete search engine optimizer. It combines the best practices in search engine optimization, in one simple to use package, including keywords, page descriptions, title updates and many other features.

Google XML Sitemaps creates sitemaps.org compatible sitemap of your website, which makes it easier for Google, Yahoo, ASK.com and MSN to find web pages on your website.

Ultimate Google Analytics inserts Google Analytics code into your website, without having to modify your WordPress templates. Google Analytics is a website statistics package that tracks traffic sources, web hits and a wealth of information about the people are on your website. I prefer it to WordPress Stats.

FeedBurner FeedSmith redirects all RSS readers to FeedBurner.com. FeedBurner is a great way to track and manage your RSS subscribers. Since FeedBurner is serving up your RSS feeds (instead of your web host), it lightens the load on your website.

Sociable automatically adds links on your posts and pages to popular social bookmarking sites (Digg, Del.icio.us, StumbleUpon, Technorati and many, many others). It’s another great way for readers to find you.

WordPress Database Backup is On-demand backup of your WordPress database. You should backup your database on a regular basis and before major upgrades and this plugin makes it a snap.

There are plenty of other fine Wordpress Plugins, these are the few that I almost always install

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

Learn to program with Scratch


There isn’t anything better to learn the concepts of programming than Scratch, a GUI based, programming kit from MIT. It’s like programming with Lego Blocks!

I started programming with BASIC, FORTRAN and COBOL in the 70s, and I have programmed in C, C+, Pascal, COBOL, FORTRAN, PERL, Assembly and all kinds of scripting languages. Noting is more frustrating than having to look up how to put something together in a language you don’t know. You spend all your time looking in reference manuals.

Forget Object Oriented programming languages for learning. Not only do you have to learn the language, you have to learn the object library.

That is not the case with Scratch. Everything you need to know is on screen. You just drag the programming elements into program execution area and click them together.

You can build multi-threaded programs in minutes! You will very quickly learn the concepts like FOR LOOPS, WHILE LOOPS and IF THEN statements, and be ready for other languages like Pascal or VisualBasic, then move on to more challenging languages like PERL, with it’s super-powerful pattern matching regular expressions and advanced Object-oriented languages like C++, Java or Delphi.

You should start out by trying to write simple games. Nothing will teach you more. You will have to let the player have a turn, computer have a turn, display information on the screen and save data.

After writing games in high-school, I got my first job programming. The tech manager wanted to teach me about finite-state machines. I realized it was the same way I had coded my games. The only thing I would have gotten from a college degree would have been the names of what I already knew.

So, get Scratch, write games, have fun. You’ll be surprised what you will learn.

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

How to DIY

This 3-ring binder is the real “Eric’s Projects”. It contains all my drawings and plans. All of these projects started out as something I wanted to make. The first step was a drawing.

Once things are on paper, they become static. You just have to do what is on paper and you are done. It is very easy to imagine how a finished project is going to look, but imagination isn’t static. If you built it from imagination, the project would be constantly changing while being built. By putting it on paper, you can start measuring it, calculating the parts needed and building it.

While some of the pictures are better than others, you don’t need CAD software, drafting skills, or even need to draw straight lines. Most of my initial drawings are not to any scale. I just needed to be able to determine the basic shape and look of the project.

Here are the original plans for the play stools. The design goals were simple. A 12 inch by 12 inch by 12 stool, with a hole in the top, so it could be picked up and carried around. I was making 8 stools total, so they had to be easy to build. This drawing shows my initial concept, 1 x 6 boards for the top and 2 x 12 boards for the sides. I also put a 2 x 6 board in the middle, to keep it from collapsing (I’ll talk about this in design basics, another post).

I drew the actual boards, not just a single line. I did this so I could see how they would stack. This is very important! 1 x 6 boards are actually 3/4 inch x 5 1/4 inches and 2 x 12 boards are actually 1 1/2 inches by 11 1/4 inches. So a 3/4 board on top of a 11 1/4 inch board gives a 12 inch height. With the picture, I can clearly see it.

This Sand and Water table drawing shows that the shorter side is 24 inches. The actual boards are 22 1/2 inches. That is because it is using 3/4 inch lumber. Together, the front and back take up 1 1/2 inches. 24 minus 1 1/2 is 22 1/2 inches. Without the drawing, I might have forgotten that.

All of the drawings I’ve shown so far are “orthogonal views”, in drafting terms. Orthogonal views do NOT have vanishing points and do not take into account the fact that the farther away something is, the smaller it is. This makes orthogonal views easier to draw. Anyone who has doodled a picture of a box has drawn this view. An orthogonal view shows 3 sides, usually the front, side and top. They are easiest to draw if you start with the side of the object that is closest to you. Then add the lines to give it depth. Then add in other lines to create boards.

Some projects, like the playstands, would be too difficult for an orthogonal view, so I just drew the front and a side. If you draw the views near each other, at the same scale, you can almost see the whole thing at once.


It’s not always important to draw the entire project. For this doll house, the drawing shows the floors of the house and one side of the roof. This drawing shows three different configurations I tried. First, with three floors, then only two, and finally I realized that it needed to be taller.

Also, I was having trouble visualizing how the roof was going to work, so the last side view shows one of the roof boards.

This doll house is not much more than a shelf with a roof, so this drawing was enough.

More recently, I found a barn in a catalog that I wanted to build, but I wanted a different roof. It was the same basic design as the doll house, so I just did a quick diagram, so I see how the roof would go together.

I wrote a few dimensions on the drawing and began building. The barn and doll house were very close in design, so this drawing was all I needed.


There are times when scale is important. The hook piece on the playstands had to to be large enough so that I could attach it with screws, even though other boards were going to be in the way. I drew it a full size, 1 inch on the drawing = 1 inch in real life. That way I could measure boards, where screws were going to go, and get a chance to think it through before cutting wood. When the drawing was just right, so I cut out and and traced it onto the wood.

You may have noticed that some of my drawings are on plain paper and some are on graph paper. I prefer graph paper. The lines help me draw straight and keep things in proportion. For this playstand hook drawing, 1 square = 1/4 inch. For the doll house drawing above, 1 square = two inches. Try to pick a scale that is easy to work and lets your drawing be as large as possible.

Tools:

  • Mechanical pencil - so you don’t have to keep sharpening it.
  • Eraser - so you can change your mind
  • Graph paper - makes it so much easier to draw
  • Ruler - to draw straight lines and keep things in proportion
  • Drafting triangles, 30 / 60 degree and a 45 degree. Makes angled lines easier.

Most of these supplies can be picked up where ever your purchase school supplies.

Amazon.com has quite a few books on design and drafting, but most of these books are way beyond what is needed to complete a project. The playstand drawing and sand and water table drawing are third generation drawings I did as part of this website and not what I used to build my playstands and sand and water table. The originals were misplaced, but looked much more like the drawing for the stools.

Here are a few other drawings and projects. The first is a rabbit hutch. I had trouble scanning in the drawing, so you will have to click on the picture to view it. I wanted the sides and doors constructed with lapjoints. The front door closes similar to the Henitentiary, and the dimensions were determined by the litter pan I had already purchased. The drawing is messy and crooked, but it enabled me to visualize how all the parts went together.

The second project is a saddle stand / play horse. You may notice that the saddle horse is very similar to the playstands, so I didn’t have to put a lot of work in the drawing, just enough so I had the dimensions of the parts.

Drawing take practice, but after just a few pictures, you will notice improvement in your drawings and your projects.

In the next article in this series, we’ll look at how the parts of a project go together.

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

Lotus Notes from a TrueCrypt volume on a USB disk

Starting with version 7.0.2, IBM developed an installation method for Lotus Notes they call NOMAD. See the IBM developerWorks document here.

I tried it and it works, even within a TrueCrypt volume on a USB disk. It’s not a PortableApps package, but it is usable.

NOMAD will take 350 to 500meg of disk space.  To install NOMAD, you will have to open a command prompt window and go into the folder where you expanded the Lotus Notes client, c1652en for version 7.0.3. Type the following command:

setup /a /v"NOMAD=1 TARGETDIR=F:\ /qb+"

IMPORTANT:

  • This will overwrite the AUTORUN.INF on your USB or in your TrueCrypt volume, so make a backup copy before starting!
  • F:\ is the drive letter to install to. This will need to be consistent because NOMAD will expect to run from this drive letter every time.
  • Type the command as-is (other than changing the drive letter) and don’t forget any “.

This will create the following files and folders on your USB:

  • AUTORUN.EXE
  • AUTORUN.INF
  • AUTORUN.INI (contains reference to drive letter, if you need to change it after running setup)
  • Lotus Notes 7.0.3.msi
  • program files folder
  • system32 folder

To launch Lotus Notes, double click on the AUTORUN.EXE.  AUTORUN will then perform a “mini-install” and copy the appropriate files to your hard drive, create a shortcut on your desktop then Launch the Notes client.

Exiting Notes will NOT remove the Notes Client files.  Make sure you right-click (from Explorer) on the USB drive Icon and select “Eject”.  This will perform the “mini-uninstall”, then allow you to remove the USB drive.  If you are running from a TrueCrypt volume, dismounting the TrueCrypt volume will trigger the same events.

Chris Whisonant provides some additional information, along with some tips on what to delete after running setup, to free up some disk space.

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

Autorun Truecrypt 5 on a USB drive using Traveler Disk Setup

Earlier, I posted a HowTo on using Autorun TrueCrypt from a USB drive. I recently upgraded to version 5.1a.  Here is how to accomplish the same thing, using the built in “Travler Disk Setup” in TrueCrypt.

I suggest you read the 7 Applications I carry on my TrueCrypt USB drive, to help you decide what goes into your encrypted volume and what stays out.

The current version of TrueCrypt is 5.1a.  There are many bug fixes!  Make sure you are using the most current code.  Get a fresh copy here.

Follow the instructions and install TrueCrypt to your system.  We are then going to create the volume and finally, use the Traveler Disk Setup to install TrueCrypt to the USB and have it create the AUTORUN.INF.

Run TrueCrypt and from the menu pick File -> Create New Volume. Select Create a file container, next, Create a Standard Volume, next and use the select file button to select your USB drive, make a folder called TrueCrypt, select it, then type in a filename of your choice (hint: TrueCrypt.tc), next, select your encryption algorithm (hint: take the defaults), next, select the size. You can use almost the entire USB drive. You will need about 1.5 meg for the TrueCrypt programs. On a 2 gig USB drive, I left 500meg for anti-virus, anti-spyware and repair programs, so I can check out a machine before I open my encrypted volume.

travelerdisk.pngWhen TrueCrypt is done creating the volume, go back and complete the Traveler Disk Setup. From the TrueCrypt menu, pick Tools -> Traveler Disk Setup. Use the first Browse button to navigate to the root directory of your USB drive. Uncheck the “Include TrueCrypt Volume Creation Wizard”, Click the Auto-mount TrueCrypt volume, use the lower Browse button to navigate to your file (TrueCrypt\TrueCrypt.tc). I suggest checking the “Open Explorer window for mounted volume”. Click “Create”. TrueCrypt should pop up a windows telling you that it was successful. Then click Close. You will have to eject the USB drive then reinsert to test it.

For more information on Traveler Mode, see the TrueCrypt documentation.

Microsoft Developer network (MSDN) has an article, which covers all the options in a AUTORUN.INF file and DailyCupofTech an article AUTORUN.INF Tweaking.

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

Solar greenhouse panels on GroovyGreen

solexx_panels.jpgI wrote an article for GroovyGreen.com about 30 used greenhouse panels I picked up last weekend. I got a phenomenal price, all 30 for $50.They are 4 feet x 8 feet and normally sell for about $40 each.

Read the rest of the story here.

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

Home Made Vegetable Oil Lamp: Judyofthewoods.net

Home made vegetable oil lamp: Judyofthewoods.netJudy of the Woods has instructions for these fantastic looking vegetable oil lamps.

Judy used wire, wick, vegetable oil, a container and hand tools to make these oil lamps.

She lists some advantages of oil lamps:

  1. very cheap to run - can even burn used cooking oil
  2. the fumes are less toxic than those of paraffin candles or mineral oil lamps
  3. the production of renewable vegetable oil is less harmful to the environment than petroleum based products (including paraffin candles)
  4. for the extreme survivalist, vegetable oil is easier to store in bulk, or can even be produced on the home farm
  5. due to the wider base, more stable than candles, and the flame of any burning wick falling into the oil will be extinguished
  6. odour free when using olive oil

I’ve made many beeswax candles over the years and love the smell, but they are a lot of work to make. These sound like they are easy to make and look great.

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google

How to add “Open with Notepad” to the Context menu

HowtoGeek.com has a handy tip for Windows users, How to add “Open with Notepad” to the Context menu for All Files. This is Great! There are times when Windows makes it difficult to open unknown file types and this tip puts the “Open with…” on the Right-Click menu for ANY file.

I am not much of a Notepad person, I prefer EditPadLite, so here is how I altered the instructions to work with EditPadLite.

I went into RegEdit.exe (WindowsKey-R, regedit, enter) and opened HKEY_CLASSES_ROOT, then *. I had to add a new key “shell”. I opened “shell” and added a new key “Open with EditPadLite”, then opened “Open with EditPadLite” and added a new key “command”. I double clicked on the (Default) and entered:

"C:\Program Files\JGsoft\EditPadLite\EditPadLite.exe" %1

(click for full sized image)

Close RegEdit and test it out.

You may have to use a different path, if you installed EditPadLite into a different folder. I had to add the “” because of the space in C:\Program Files folder name.

If you prefer the functionality without the fuss, try a copy of NotePad++. The installation program can add NotePad++ to the Right-Click menu.

via LifeHacker.com

These icons link to social bookmarking sites where readers can share and discover new web pages.
  • Digg
  • del.icio.us
  • Technorati
  • StumbleUpon
  • YahooMyWeb
  • Live
  • Google