Libri: The Atrocity Archives, Charles Stross

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Un filone nuovo e, per una volta diverso dalla solita fantascienza .... ambientazione horror-fantascientifica.
Personaggi molto ben caratterizzati, trama a dir poco originale.
Una lettura divertente

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Toshiba Air Conditioner IR signal Reverse Engineering

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Introduction I am in the process of installing some Toshiba air conditioners in my house, and am planning to control them remotely using OpenHab (http://www.openhab.org/). The first step to be able to control the air conditioner is to be able to emulate IR signals as they are sent by the AC remote. In order to do that I have modified an open source IR library (https://github.com/r45635/HVAC-IR-Control) to add support for the Toshiba AC units. Air Conditioning remotes work in a slightly different way than standard remotes as they usually transmit a packet containing all information related to the AC as opposed to, say, TV remotes where every keypress transmits only a single information like a button press. This is a typical packet sent from a Toshiba Remote (in Hexadecimal): # Key Hex      # Bits 1 fan1 F2   0D   03   FC   01   00   40   00   41   F2   0D   03   FC   01   00   40   00   41      144 it is a 72 bit packet that is transmitted twice (I imagine
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OpenHab and Node-RED Controlled Christmas Lights

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Introduction  I used to use some old X10 hardware to remotely control my external Christmas lights, but this year the RF remote was dead and I decided the automation side of the Christmas fun needed an upgrade After a quick survey of available options (I have some KMP Electronics hardware Lying around, namely some  Prodino Ethernet and some Prodino WROOM Esp8266  ) that require separate low power voltage wiring to function I decided I needed something simpler, that could withstand being stuff in a wall recess without needing a stable electrical panel setup. This is a blog post  describing how I connected Three Sonoff Basic devices to my existing home automation system to be able to turn them on or off in a manual (Openhab UI) or automated (Node-Red UI) fashion. Enter the Itead Studio Sonoff Basic The  SONOFF BASIC WIFI WIRELESS SWITCH + IP66 WATERPROOF CASE  is a basic module that includes a Wi-FI remotely controlled relay that can switch on and off relatively low powe
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A tale of two ZFS Servers, or how I ended up using two HP Microservers for Storage, Virtualization, Containers, Home Automation, you name it ...

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Introduction I bought the house I am currently living in back in 2004, and during the initial renovation I took pains to run multiple lines of cat6 cable to all rooms from a single 'utility rack'. This has guaranteed me a high level of flexibility when deciding what kind of servers/services to run during all these years. One of the few rules I have been trying to stick to is that anything that I would use on a continuos base (i.e: powered on 24x7x365) would necessarily have to have a low power draw. My personal limit for always on peripherals in the house has increased with the years, due to the increase of automation and media devices, but I have been always able to keep it under the 200WH mark. During these 15 years I have gone through multiple iterations of the hardware and services running in the house, always keeping in mind the balance between having my data stored in a reasonably safe way, my internet access available most of the time, and my ability to con
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