Raspberry, control LEDs by software(Spanish link)

The *ACT* LED, indicating that it is using the *SD* memory, can be controlled by software. Let's see how to do it from the /sys on *Linux* from a *C* program.

Link: [systemadmin.es](http://systemadmin.es/2013/01/raspberry-controlar-el-led-de-lectura-de-la-sd-por-software)