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Another dumb question... 
Just received an Arduino Nano that requires me to solder on the pins.

Is the extra 6 pin cluster (I believe it's called the ICSP??) on the top side of the board (2 pins X 3 pins) required for the WeatherDuino TX board? If not I can save some soldering! Wink

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No, we don't use that programming header as we already have the bootloader installed.
That said, they can be handy if you need to access 5vdc and GND.