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→Tutorials
** [http://learn.adafruit.com/matrix-7-segment-led-backpack-with-the-raspberry-pi/ Adafruit has now made their own tutorial]
** [http://learn.adafruit.com/matrix-7-segment-led-backpack-with-the-raspberry-pi/ Adafruit has now made their own tutorial]
* [http://elinux.org/RPi_Tutorial_EGHS:GPIO_Protection_Circuits GPIO protection circuits]: different approaches to safely interfacing with RPi pins
* [http://elinux.org/RPi_Tutorial_EGHS:GPIO_Protection_Circuits GPIO protection circuits]: different approaches to safely interfacing with RPi pins
* [http://www.sparkfun.com/tutorials/65 SparkFun sensor interface]: general tutorial for logic level conversion
* [http://www.sparkfun.com/tutorials/65 SparkFun sensor interfacing]: general tutorial for logic level conversion
=== Links ===
=== Links ===