[Howto] use GPIO from Raspberry Pi

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the Linux-Kernel manages the GPIO-system under the path /sys/class/gpio. Use the following commands to manage the pins (e.g. GPIO 17):   activate GPIO 17: echo 17 > /sys/class/gpio/export deactivate GPIO 17: echo 17 > /sys/class/gpio/unexport   configure GPIO 17 as … Continued