1   Problémy s instalací a jiné poznatky

su -
cat /etc/portage/package.use/arduino
        >=dev-util/astyle-3.1-r2 java
gemerge -avq arduino
lsusb
        Bus 005 Device 013: ID 2341:0042 Arduino SA Mega 2560 R3 (CDC ACM)
cat /etc/udev/rules.d/99-Arduino.rules
        # Bus 005 Device 013: ID 2341:0042 Arduino SA Mega 2560 R3 (CDC ACM)
        SUBSYSTEM=="tty", ATTRS{idVendor}=="2341", ATTRS{idProduct}=="0042", SYMLINK+="ttyArduinoMega"
exit
# arduino
# Parameter 'tools' is mandatory
# so ...
mkdir ~/.arduino15/packages/
arduino
# Blink
# fork/exec /usr/bin/avr-g++: no such file or directory
# Missing avr-g++; you need to crossdev -s4 avr
su -
crossdev -s4 avr
exit
arduino
# OK