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Software

AtTiny Advent Wreath

An advent wreath in late spring, you ask? Yes, the timing is a bit off, and that’s not just because the coldest spring in ages has not finished yet. While browsing for the topic of my last post, I discovered a nice little one-evening-project: Geeky advent from tinkerlog. I had all the required parts here, … Continue reading »

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AtMega breadboard header

A while ago, I ordered some AtTiny breadboard headers from tinkerlog.com. Unfortunately, they didn’t have any boards for AtMega’s left. The ones for the AtTiny’s are very handy, and I used them whenever prototyping something with an AtTiny. In fact, I used it almost whenever flashing an AtTiny. Many times I wished I had one … Continue reading »

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Jumping ship as google is getting evil

For many years google stood out of the big IT enterprises as an example of respecting their users and embracing open standards. Sadly, they are drifting away from that, and it looks as if they want to get as┬áinsidious as the others. Gone are the times of “do no evil”. Just recently, I wanted to … Continue reading »

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BitCoin hits CHF 100 mark

Yesterday one BitCoin was, for the first time, worth more than CHF 100! When I first learned about BitCoin in early 2011, CPU mining was still enabled in the default client. I mined for a few days, but it was probably already too late for the CPU. GPU’s took over before that. Last year, you … Continue reading »

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Adding a display to rfid time tracking

More than a year ago, I blogged here about using RFID to track presence times in the BORM ERP system. I used the system a lot since then. But the BlinkM was really limited as the only immediate feedback channel. To use it with multiple users, a display was needed. The default Arduino compatible displays … Continue reading »

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GPGPU programming class

It’s already a while back that I completed the coursera class “Heterogeneous Parallel Programming“. It was mainly concerned with cuda, which is Nvidia’s GPGPU framework. GPGPU is about running common computations on the graphics card. The class also quickly covered OpenCL, OpenACC, C++AMP and MPI. In the programming assignments, we juggled a lot with low … Continue reading »

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minimalist lasershow

For a long time I marvelled at sites with self built laser shows. There is truly amazing stuff out there. But most of them look like really lots of work. And with simple commercial units getting cheaper, I don’t know if all that effort can be justified. So I had a look at the commercial … Continue reading »

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my first package in the official debian repository

I have created deb packages for a couple of years now. Primarily for software that I created myself, or was somehow involved. But sometimes I also packaged stuff that I just used, and wanted to be able to conveniently install and upgrade on different systems. One of these was printrun, a host software for reprap … Continue reading »

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locally encrypted remote storage

Unlike the ordinary users, tech savy people are well aware of what can happen to your data, if you store it on cloud services such as dropbox. There are services that promise to encrypt your data locally, so that they can’t access them, a prominent one being wuala. On one hand, I don’t know if … Continue reading »

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switching the christmas tree online

The first time I got interested in home automation, was when browsing the arduino libraries. That was all about X10, which communicates over power lines. There are switches that can replace the regular light switches and are pretty cheap in the US. If you want such switches here in Switzerland, you’ll be surprised how expensive … Continue reading »

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