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Raspberry Pi at heart of global computing skills plan

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The Raspberry Pi Foundation is joining forces with the CoderDojo Foundation, which runs a a global network of coding clubs for kids from seven to 17. This will create the largest global initiative to promote computing amongst young students. “We have set ourselves an ambitious goal: to quadruple the number of CoderDojos worldwide, to 5,000, by …

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Red green and blue from a single pixel

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Researchers at the University of Central Florida have developed a colour changing surface tunable through voltage. “We can make a red sub-pixel go to blue, for instance,” said researcher Debashis Chanda. “In other displays that is not possible because they need three static colour filters to show the full RGB colour. We don’t need that …

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Using Arduino to programme an 8pin ATtiny

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Maybe I am a little slow… As I did not realise that Arduino is a quick route to getting a stand-alone 8pin microcontroller – an Atmel ATtiny85 – to do something useful. You don’t get all of the functions and performance of an ATtiny programmed in assembler, but you can do a lot with what …

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Harvard commercial downlight makes up to 3,000 lm

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The Integrated Downlight Module from Harvard Engineering has factory programmable output current and delivers up to 140 lm/w and 2,700-6,500K colour temperature and 80 or 90CRI options. It is designed to have a reflector and mounting hardware (eg, clips) underneath. Power is 120 – 277V (50-60Hz), with 1% dimming over DALI, wireless (Harvard EyeNut) or 1-10 …

Read full article: Harvard commercial downlight makes up to 3,000 lm

The Intel-ARM power struggle

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Almost a decade ago, back in 2008, ARM was battling Intel in the mobile processor space using its three advantages: as the incumbent mobile processor leader, as a licensor of cores rather than a supplier of  single-sourced chips, and as the power consumption leader. As the power consumption leader, ARM always though Intel would catch up one day, …

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Electro-optic switch sweeps refractive index by 60%

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Researchers from North Carolina State University have discovered a technique for controlling red light with electric fields, with possible applications in photonics. It involves layers of thin material whose refractive index changes by up to 60%. “Unfortunately, it is very difficult to tune refractive index with electric fields,” said researcher Linyou Cao. “Previous techniques could …

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Amazon AppStream 2.0 now allows you to use your VPC security groups to control network traffic

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Amazon AppStream 2.0 now allows you to control network traffic between your streaming instances and the resources in your VPC by using security groups. Security groups provide granular, network-level access controls to streaming instances, and you can use them to manage users’ access to databases, license servers, file shares, or application servers from the streamed applications they use. 

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