• Implementing zoom with moving pivot point using libclutter

    I’m making this post because I struggled with this functionality a lot! I was implementing it (to the extent I was happy with) in the course of 4 or even 5 days! Ok, first goes an animated gif which shows my desired zoom behavior (check out Inkscape, or other graphics programs, they all work the same in this regard):

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  • Cross compilation with GCC & QtCreator for ARM Cortex M

    This post is outdated!! . Please see http://www.iwasz.pl/electronics/stm32-on-ubuntu-linux-step-by-step/ for more up to date instructions.

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  • BlueNRG + STM32F7-DISCO tests

    • Tested 32bit cross-compiler from Launchpad, it worked OK, but binaries were much bigger, and debugger lacked Python support which is required by QtCreator which is an IDE of my choice (for all C/C++ development including embedded).

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  • Internet thermal printer part 2

    The printer I bought and described in the previous post really disappointed me. I didn’t spend some huge amount of time on that (say 3-4 evenings), but I dig into the subject so deep so I couldn’t help myself but do some more hacking. First of all I wanted to know if my cool looking, but quite useless printer can be used in some other way (i.e. the printing head) and whether that is the main board which is broken or the head itself. If the former was true, and the head was OK, I would try to communicate with the head and thus make something which would pretty much implement the whole printer main board that was broken. But if the head was broken, I couldn’t do anything but to abandon the project or find another printer. And it’s funny, because, as you may have seen at the end of my previous post, this is exactly I’ve written not to do. But I just love it. When the work you do all day every day is stupid and pointless, when you are constantly bothered with more and more irrelevant things, and after all day you are tired and discouraged, what would you do after arriving home (excluding household duties :D)? Grab a beer, sit and watch TV? Hell no! Grab a beer and tinker some more! It calms me down you know (unless I’m stuck for to long). The printer head used in my Intermec PW40 is a Seiko ( www.sii.co.jp) SII LTP3445 (datasheet here) and it is obsolete. New designs are encouraged to use LTPV445.

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  • Internet thermal printer

    What this project is intended to be:

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