Building Wind Turbines and Axial Flux Generators

Here are some links to various articles and videos of custom-built wind turbine projects:

DIY-1000-watt-wind-turbine (PDF)


Wind and Hydro-electric Power Simulation for the DC House Project

This project details the design and integration of a wind and hydro-electric power simulation system in correlation with the DC House Project. The simulator uses variable speed drives to rotate a DC motor which then drives a generator to produce output. This output is then regulated using a DC to DC converter which holds the voltage level constant making it easier to interface with other power sources for the house. The test results indicate that the simulator will be able to produce two separate power outputs that will provide at least 70 Watts of power in the acceptable speed range of 500-1100 RPM and substantially more power for speeds in excess of 1100 RPM. A simple wind power analysis has also been provided to help explain how easily the system can be adjusted to produce the specific wind power or hydroelectric power available in a geographic region.

Wind and Hydroelectric Power Simulation for the DC House Project (PDF)

Maxwell 350 Farad 2.5V Ultracapacitor High Current PCB Connection Style

Basic specs:

  • Capacitance 350 farads
  • DC Equivalent Series Resistance (ESR) 3.2 milliohm
  • AC Equivalent Series Resistance (ESR) 1.6 milliohm
  • Short Circuit Current 1687 Amps
  • Max Peak Current (1 sec) 220 Amps
  • Absolute Max Voltage 2.85V
  • Operating Temperature Range -40 to +65 degrees C
  • Stored energy 1275 joules (.354 WH)
  • Max Power 976 Watts
  • Connections PCB solder pins
  • Weight 2.1 oz (60 grams)
  • Diameter 1.3 inches (33 mm)
  • Length 2.44 inches (62 mm)

You can solder the ucap in a PCB or solder directly to the pins to make connections.
They are basically the same size as an ordinary D cell flashlight battery.
They were intended for use in high reliability wind turbine blade pitch control applications.

These are the high current PCB connection style. Unlike many competing styles with wire leads, the hefty tin plated copper pins have negligible resistance, so they can deliver the full rated 1687 amps of short circuit current without problem.

Click HERE to see the Maxwell data on this item.

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A fantastic article about using Cisco CBAC to filter network traffic and prevent DoS

A Denial-of-Service (DOS) attack can cause immense harm to your business. In this chapter, you can learn how to deal with such an attack, and minimize the damage done.

Of the three categories of attacks—reconnaissance, access, and denial-of-service (DoS)—DoS attacks are the easiest to implement yet the hardest to defeat. DoS attacks are based on packet flooding, which uses up bandwidth, CPU, and memory resources on not just the victim device, but also intervening devices, such as routers, switches, and firewalls.

When you are experiencing a DoS attack, one of the first things you need to do is find out the actual kind of DoS attack that is affecting your network. As you will see in the first section of this chapter, a variety of options are available to you, including examining the CPU utilization of your routers, using ACL statements with logging parameters, and using NetFlow.

When you know the kind of DoS attack directed at your network, you can implement an appropriate solution. The remaining sections in this chapter focus on these solutions, including TCP Intercept, CBAC, and rate limiting. Of course, you always can use an ACL to block offending traffic; however, this might introduce other problems, such as the blocking of legitimate traffic. Therefore, in many cases, you need to use other tools, such as the ones discussed in the last half of this chapter, to deal with DoS issues.

Cisco Router Firewall Security: DoS Protection Chapter

Ryan Parker’s Perl CGI Module

I’m bringing it back right here… I’ve been going through old files cleaning up my drivespace, when I found this I had to post it for old times sake. This module was probably made back in 1998 by Ryan Parker which we used to provide us with a CGI/MySQL backend to our websites. This was basically a re-write of the original CGI module for Perl because Ryan hated that one and didn’t want to use it.

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Puppet 2.6.0 Release Notes – Huge Changes from 0.25.5

I’ve made this post so that I can easily find and reference the changes:

The Puppet 2.6.0 release is a major feature release and includes a huge
variety of new features, fixes, updates and enhancements. These include the
complete cut-over from XMLRPC to the REST API, numerous language
enhancements, a complete rewrite of the events and reporting system, an
internal Ruby DSL, a single binary, Windows support, a new HTTP report
processor, and a myriad of other enhancements.

As a result of the bucket-load of new features and enhancements we also
need lots of help testing it. Please run up the release candidate in
your test environment or using VMs and test it as extensively as

We’ve include release notes below that you can also see at:

The release candidate is available for download at:

Please note that all final releases of Puppet are signed with the
Puppet Labs key (we’ll sign the production release with the new,
improved Puppet Labs key).

See the Verifying Puppet Download section at

Please test this release candidate and report feedback via the
Puppet Labs Redmine site:
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