Archive for April 2012

USB charging problems solved

Charging the Blackberry in the van is quite a lot harder than you would imagine. I bought several different PSUs that output ‘USB power’ including a very fancy digital laptop PC one, one that claimed to put out 2.1 amps for the iPad, and more. Yet every time I would get a message on the…

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Roads that suck energy out of speeders

Here is an idea to make speeding expensive for those breaking the rules. Monitor their speed passively via an energy absorbing road surface. Sleeping policemen that deform with a rate-adaptive material would ‘steal’ the speed from those going faster, driving up their fuel costs, and, perhaps by doing this with valves and pneumatics, the resulting…

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Sensor fusion – Correlated noise and why it’s such an issue

You may never have heard of correlated noise, but it is a huge issue when doing signal processing or even just using a couple of sensors. It is most painful when using a cheap set of Night Vision Goggles! Cheap NVGs will only have one single multiplier tube, and a set of mirrors to send…

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The only known cold and ‘flu preventative

The only known cold and ‘flu preventative (besides hygiene) is zinc. Every year billions of pills are popped and better than 99% are nothing that can help. Sadly, antibiotics are prescribed to many for a viral infection, and the USA USDA still refuses to ban routine feeding of antibiotics to cattle (faster growth is a…

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Playing with the Kinect

I’ve been playing with the Microsoft Kinect in Windows. Ironically, perhaps, it was far faster to use non-MS tools to do it! I’ve just spent an hour or so playing with the outputs from the OpenKinect tools, which allow you see the IR outputs, depth map (as a false colour “thermal image” and the visible…

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New machine tools

Oh, the excitement. I’ve ordered a couple of new machines! A scrollsaw, for one of my ideas, which should be very handy generally, as it allows very precise and fine cutting, with a minimum of kerf and no risk to the fingers – you can touch the moving blade without issue, which is the absolute…

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pp3dp.com • The UP! printer

pp3dp.com • Printing the whistle. This is the whistle model I’m trying to print. whistle-2tone-v1.2 The issue I am having is that the base doesn’t fully work. Despite it being rotated properly and the two contact points being within a fraction of each other, the software for the UP! isn’t making a bade for the…

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