Worst customer experience ever

The best notebook ever I blogged about my attempts to buy a decent notebook here before. But let’s recap quickly. In the fall of 2013 I bought a Dell XPS13 Developer edition. When Dell shortly thereafter announced that they now accept BitCoin, I had the feeling I missed out on that opportunity. Nevertheless, it was… Continue reading Worst customer experience ever

let’s encrypt

I never bought a commercial grade SSL certificate for my private website, but I used free ones before. Usually from startssl. While it worked, the process was cumbersome. And then when I wanted to renew, my browser showed a warning that their own certificate was out of order. When the letsencrypt initiative (supported by mozilla… Continue reading let’s encrypt

ubuntu phone will be great, but it is not yet

The BQ Aquaris ubuntu phone that I waited for so eagerly was delivered today. Full of anticipation I unpacked it and switched it on. After playing with it for a while the excitement turned into dissatisfaction. I hate to say it, but on a phone the solid base and polished user experience is not enough,… Continue reading ubuntu phone will be great, but it is not yet

OpenCL First Steps

There is an increasing noise about GPGPU computing and how much faster than CPU (even parallel) it is. If you didn’t hear about all that, GPGPU is about using the computer’s graphics card(s) to do general purpose computations. The key to the performance lies in the parallel architecture of these devices. From what I read,… Continue reading OpenCL First Steps

packaging libboost compiled with llvm clang

I read many articles and posts over the last year or so, citing how great llvm clang is. On one side it shall have a static checker that makes lint redundant, and on the other side the optimizer has an -o4 where the -o3 shall be comparable to other optimizers. On top of that, compilation… Continue reading packaging libboost compiled with llvm clang

Robot Arm part 1 packaging and simple manipulation

Another project that I had in mind for a while was to experiment with robot arm path planning and inverse kinematics. If you don’t know what that is, think about how robot arms could be programmed. The simplest form would be capture and replay, in which you have a controller which which you record how… Continue reading Robot Arm part 1 packaging and simple manipulation