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IoT Async

Qualche mese fa avevo sviluppato una applicazione IoT per misurare la temperatura e spedire i dati ad una coda mqtt. Poi c’era uns server che colelzzionava i dati. Totale: tre server, con tre punti di fallimento ma architettura molto “cool” In effetti però la potenza dei moderni chip embedded è tale che è possibile implementare …

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Exploring a 23 years old code base: LambdaMoo MUD Part 2

In this second article I will continue my jorney on LambdaMoo code base. The C code is very well written. Sometimes the API abuse global variable to avoid passing around identifier like output database file descriptor or the like. Because a lot of the system has been written in the Moo language, the core is …

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Stereo Sid 2.0.6 update

After a bunch of years, I am happy to announce StereoSID 2.0.6 is here to stay. It spots a new sid_player example and some optimization on the I2C implementation. MOS6581 SID Emulator Arduino Library with stereo capabilityhttps://github.com/daitangio/sid-arduino-lib1 forks.10 stars.1 open issues.Recent commits: Merge pull request #3 from per1234/keywords_txt-multiple-tabsUse a single tab field separator in keywords.txt, …

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Exploring a 23 years old code base: LambdaMoo MUD Part 1

On these days my greek daemon (the one which talk to me about deep nerd programming) was interested on LambdaMoo. LambdaMoo is an Object Oriented Multi User Dungeon born back in 1995. A MUD was a text based system you log in, talk with other, create adventures and so on. LambdaMoo has a script language …

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OpsDev

From an internal email of a very very big corporate company Incident Background: BIGPROJECT has been unavailable since APAC SOD due to a data refresh activity being wrongly triggered in from UAT to Production environments. Business Impact BIGPROJECT is unavailable for all users in the bank BIGPROJECT2 platform which sits on BIGPROJECT is unavailable this …

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New Syntax library: Crayon

After some trial and error, I decided to switch to a new syntax highlighter library, mostly because the old one stopped working. I am very satisfied with Crayon because it is backward compatible with  the previous plugin based on SyntaxHighlighter3 and offer also a nice in-line editor.      

Emacs absolute minimum setup

Sometimes I need a very very fast start on emacs. If you have the same need, put this in your init.el and live happy:

Meltdown and Spectre

Meltdown and Spectre are two big vulnearbilities found in Intel and AMD chips out of there. The vulenarbility is so huge it affects up to 1995 chips. On the raspberrypi, there is a very nice explanation of what Meltdown is. First of all, the one who discovered this bug is a GENIUS, for sure. The …

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Esp8266 Music Machine

After months of esp8266 experimentation, I “just” discovered this little chip has also a I2S Audio digital interface. To discover it you must install the Arduino IDE adapter and code directly in C++ (brr, ok not a breeze but not boring like Java :) I2S is a digital protocol to send your digital  music to …

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