* '''PB''' - this is the 'Power Button' pin, which we use for testing. Just leave it disconnected for use.
* '''PB''' - this is the 'Power Button' pin, which we use for testing. Just leave it disconnected for use.
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In general, you'll only want to power through the Vin and GND pins. The Vin input pin is polarity protected and can use 3V-5.5V DC input. If you want to use a larger voltage, you'll need another regulator that can bring the voltage down to 3-5V DC
+
In general, you'll only want to power through the Vin and GND pins. The Vin input pin is polarity protected and can use 3V-5.5V DC input. If you want to use a larger voltage, you'll need another regulator that can bring the voltage down to 3-5V DC}}