Logic Level Converter

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Description

When trying to interface your 5v project with a 3.3v sensor or device like an XBee, you'll have to convert the logic level to don't fry it.

Sparkfun has a cheap Logic Level Converter ready to use but if you need it fast and don't want to wait, you can build your own.

BOM (Bill Of Material)

1 x 2N2222 NPN transistor(It's possible to use another NPN transistor but is untested)
4 x 10k Resistor

Schematic

Logic level converter.png