Driving YM2149F sound chip with an Arduino

A few months ago, I had the opportunity to get a Yamaha YM2149F chip. This chip is basically a clone of General Instrument's AY-3-8910, "a 3 voices programmable sound generator" widely used in the 80's in many arcade games and home computers (including the Atari ST and Amstrad CPC).

The …

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Arduino Hello World without IDE

There is already a number of resources available about programming the Arduino with or without the IDE (I won't discuss here the pros and cons of using it). This aims at being a quick memo for those who already have some knowledge about C programming, and just want the minimal …

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Inkjet versus laser printer

Contrary to what I found on most websites when googling about comparisons between inkjet and laser printers, the cost per page on high end inkjet printers is lower than that of laser printers.

Moreover, when buying a new printer one has to consider the number of pages that will be …

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Right VM cost

With cloud Virtual Machines prices dropping month after month, we may be asking if the margins previously done by cloud operators were not outrageously high. I actually find surprising that current VM price is on average higher than equivalent dedicated server even though virtualization allows sharing more hardware.

Comparing dedicated …

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Git SSH Docker container

My favorite option to backup and version my code and text files is using git with a remote repository. The implementation I have chosen for that consists in running an ssh server, with git, in a Docker container. This has the following advantages over other solutions:

  • 100% reproducible;
  • Limits access …
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