Monthly Archives: April 2014

What performs better on a RasPi: Apache, Lighttpd or Nginx?

Linux, Raspberry Pi, Wheezy, WordPress, , , , , ,

As I’m hosting my blog on a Raspberry Pi, I did some research on the web about it’s performance as a server. I started this site with Apache and migrated after a while to Lighttpd which already reduced server response time (3.6 seconds, according to Google’s PageSpeed Insights it reached 72/100 points) and improved performance. With an DSL upload speed of only 676 kbit/s one shouldn’t expect miracles anyway. Google’s PageSpeed results, which suggested to make a couple of changes to my site, and a comparison of Lighttpd vs. Nginx convinced me to migrate to Nginx.

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Home automation – Driving a relay with RasPi/ ATtiny

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So far I’ve attached devices to my Raspberry Pi or Arduino Uno with ratings less than 100 mA. These devices were connected to the output pins through a transistor or optocoupler. However, for heavy load currents a relay must be used. As a noob, it is somewhat difficult to chose parts with the right specs for driving a relay — so here are some hints.

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