• Physical Computing: Switching LEDs with an Arduino or Raspberry Pi
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    Physical Computing: Switching LEDs with an Arduino or Raspberry Pi

    In this video about “Physical Computing” I will show you, how to switch LEDs using GPIOs I am using a Raspberry Pi 3 and an Arduino Uno for the demonstrations. GPIO means General Purpose Input Output, thus you can use those pins in either input or output mode by changing nothing but a few lines of software code. In order to switch a load as demonstrated in this video, the output mode is needed. In output mode we can read either 0V… …or 3.3V at the GPIO of the Raspberry Pi… …and 5V at the pin of the Arduino. That voltage is recorded between ground and the GPIO pin. If…