Khan Academy get $2M in funding from Google

September 26, 2010

I was first introduced to the Khan Academy a while ago through Slashdot. I urge you to check out the website… At the last count there were something like 1500 lectures available free of charge on a wide variety of topics. They have just been awarded $2 million to translate their content into the world’s […]

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Choosing the right soldering iron for electronics work

September 25, 2010
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Dan, one of my Facebook buddies, wrote to me asking about choosing a soldering iron: “Quick question… I’m looking for a new soldering iron. would you recommend anything under 40 dollars without a soldering station? I’m getting tired of my RadioShack 45 watt iron with the screw on tips (and having to use a bench […]

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The Dalek Invasion of Wisconsin 2010

September 23, 2010
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My Dalek-building buddy Dave Duca has been putting in some overtime lately. He’s been preparing enough Daleks for his own “Cult Of Skaro” to appear at the Chicago TARDIS convention later this year. My Dalek was pulled from the same mo[u]lds as these, and I’m planning on giving it a new paint job and maybe […]

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Information just in on Jarre’s latest Laser Harp

September 23, 2010
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Ryan Jarre Worsley [Is that his real name? - Ed] sent me the following message via Facebook: Just been reading you latest publish on your website, some very interesting pictures, information and a good detailed section about the history of the harp. I see you are a little stuck about the information of the current […]

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Want to learn electronics? Have I got the book for you…

September 22, 2010
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I think that the most common question I get via email is “How can I learn all this electronics stuff?”. Up until recently my answer has been to look it up online. That is, until I picked up a copy of Darren Ashby’s book “Electronic Engineering 101″. Unlike software engineering, where you have to completely […]

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Wicked Laser’s S3 – the little laser that could… (never quite ship)

September 21, 2010
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As some of you know I ordered a Wicked Laser’s S3 “Arctic” blue laser some time ago [Jun 16th to be precise - Ed]. In that time I’ve contacted them 3 times to get a ship date – every time it was always “within the next 2 weeks”, but so far… nothing. Which is a […]

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Light controlled PWM generator

September 17, 2010
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Recently I was asked it I could put together a light controlled dimmer circuit that used pulse width modulation (PWM) to drive the apparent brightness of a bank of LEDs. A PWM signal has a variable duty cycle (on time v. off time) for a fixed frequency – so a square wave is a PWM […]

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Upgrading the Doodle Desk – now with added Spirograph

September 16, 2010
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I’ve been looking for ways to extend the “doodle desk” I put together for Sarah Jane over Christmas this year. One of the ideas I’ve been playing with is adding a large scale Spirograph-like drawing tool. A friend who is an expert in Autodesk Inventor was able to use the spur gear design accelerator tool […]

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Laser Harp updates

September 10, 2010
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Earlier in the year I sold the design of the laser harp to Lightwave International (http://www.lasershows.net), part of the arrangement was that I suspend the sale of the plans. Since then I have received countless email requests for information on the laser harp project – and I’ve not done a very good job of keeping […]

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New website theme

September 10, 2010
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I was using the excellent (and free) Corporate WP Theme by Ori Pearl, but the times they are a’ changin’ and it was time for something new. This new theme is called Thesis – most excellent (but not entirely free). Over the next few weeks I will be tweaking the layout into its final form […]

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