ao2's blog

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Launching the Windows Recovery Environment

A friend of mine had a problem with his Windows 10 installation: the system booted but it was unresponsive, so it was not possible to enter the Windows Recovery Environment from Windows.


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Experimenting with Gtk+ theme variants: Adwaita red

Most Gtk+ themes offer a “light” and a “dark” variant, however I found out that these names are just conventional: a Gtk+ theme can define variants with arbitrary names, so maybe this can be used for some fun stuff.


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Remove images from PDF files

Some times ago I ran into some Service Manuals with unusual background images:


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Tweeper 0.6 released, Twitter to RSS, with images

On May 23rd 2016 version 0.6 of tweeper has been released.


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SaveMySugar: exchange messages using only phone rings

From “The Lord of the Phone-Rings”, about SaveMySugar:

One RING after them all, one RING to end them,
One RING to get the... messages, and from Morse code decode 'em.

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libam7xxx-0.1.6 released

The libam7xxx-0.1.6 release is out; it's a maintenance release with no big new features.


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Automatic motion trail effect with OpenCV

You know that effect in some videos where objects moving in the scene leave a trail of their old position?


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Tweeper 0.4 released, scraping Facebook and Instagram

On September 13th 2015 I released version 0.4 of tweeper, a web scraper which converts Twitter and other sites to RSS.


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Seasonal plots, with gnuplot

Sometimes there is the need to plot some events which have a periodic trend.

Let's consider a seasonal phenomenon; a typical plot may not fully highlight the regularity of the periodic behavior:


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Teclast X98 Air 3G: unbricking a Bay Trail tablet

While I was trying to boot a vanilla linux kernel on the Teclast X98 Air 3G I messed up a bit with the UEFI firmware settings: the battery was not recognized anymore, the tablet was rebooting right after showing the UEFI firmware boot screen, and USB-host was not working either; so no keyboard for accessing the firmware menu to restore the default settings, and no ADB for running flashrom or the Intel FPT to reflash the firmware with.

Teclast X98 Air 3G, internals
Teclast X98 Air 3G, mainboard
ISP with a logic level converter, top
ISP with a logic level converter, angle