About ao2


my name is Antonio Ospite: I am a lazy Computer Scientist from Naples in Italy, not in Florida.


libam7xxx-0.1.6 released

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


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?


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.


Linux KMS driver for Acer C120

Hans de Goede informs me that he has been working on gm12u320-kms: a new linux kernel driver for the Acer C120 mini projector, and possibly other devices based on the Grain Media GM12U320 USB3 bridge chip.


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:


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


Teclast X98 Air 3G: cheap Intel Bay Trail tablet, getting acquainted

I got a Teclast X98 Air 3G tablet from Aliexpress, it costed 168 € ( with free shipping) and has a high-definition screen and it's an Intel Bay Trail device; so Android, x86 architecture, 2GiB of RAM and 32 GiB of storage on EMMC.

boot logo 1
boot logo 2
Attached files: 


Prototyping a vocoder with GStreamer

A vocoder is basically a tool to turn any sound into something which can “speak”, some examples can be seen in this Collin's Lab episode about MIDI, or in this classic from the Kraftwerk (the vocoder effect starts at 1:06):

Whether you are planning to ask for a ransom, or joining the Daft Punk, or taking a time travel to the '70s: a vocoder is always handy.


KITT showing an Applesoft BASIC program

I was watching a Knight Rider episode (namely from Season 3, Episode 1: Knight of the Drones) and I spotted some source code of a program listed by KITT.