----
**GPIOs**
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**RPi Low-level peripherals:**\\
[[http://elinux.org/Rpi_Low-level_peripherals]]

**Interrupts:**\\
[[http://raspi.tv/2013/how-to-use-interrupts-with-python-on-the-raspberry-pi-and-rpi-gpio]]

**Shutdownbutton**
for the paper-duino-pi, button on Pin 22 with internal pull-down resistor.\\
{{:shutdownbutton.py.7z|}}

**Blinking LED**