http://leucos.lstilde.org/wp ...about Linux, electronics, digital photography, whatever... Wed, 16 Dec 2009 00:29:27 +0000 http://wordpress.org/?v=2.9.1 en hourly 1 http://leucos.lstilde.org/wp/2008/09/bonjour-tout-le-monde/ http://leucos.lstilde.org/wp/2008/09/bonjour-tout-le-monde/#comments Sat, 27 Sep 2008 15:01:00 +0000 leucos http://leucos.lstilde.org/wp/?p=1 This chip is a LED driver : this means you can connect up to 64 LEDs (matrix configuration), and drive them from a microcontroller via 3 lines. The chip has segments and digits lines. The digits sinks current, while the segments source. It also has built-in PWM to control the LED brigthness. See :

• max7219 datasheet
• Sample projects using the max7219.

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