Using the Raspberry Pi IO Pins

Chris is one of the lucky people who got a Raspberry Pi out of the first charge to experiment with. He started to enable the external GPIO pins, which are of specific interest for hardware hackers. With a little bit of PHP coding in combination with a Linux cmd line program he is able to blink externals LEDs whenever somebody visits the website, which is hosted on this handy Raspberry Pi device.

image source: hobbyelektronik.org

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