Arduino

On linux

/usr/share/arduino
/usr/share/doc/arduino

/usr/share/arduino/libraries

To install Messenger:

download it
sudo file-roller
open it and navigate to /messenger/arduino/Messenger in the zip
extract to /usr/share/arduino/libraries/

Arduino 0019 current rc1 has String object
currently Arduino GA is 0018

ATMega8U2 USB

OptiBootLoader faster

Arduino as a programmer

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