Hardware
Boards.txt for Arduino IDE
Add this snipet to the end of the boards.txt file in the directory "C:\Program Files (x86)\Arduino\hardware\arduino\avr" on a windows machine:
##############################################################
#
# Entspricht einem DUEMILANOVE
#
# http://arduino.cc/en/Main/ArduinoBoardDuemilanove
#
##############################################################
lopower.name=DL2SBA Arduino Ultra Low-Power (<2.4V, 8 MHz) w/ ATmega328
lopower.upload.tool=avrdude
lopower.upload.protocol=arduino
lopower.upload.maximum_size=30720
lopower.upload.maximum_data_size=2048
lopower.upload.speed=57600
lopower.bootloader.low_fuses=0xFF
lopower.bootloader.high_fuses=0xDA
lopower.bootloader.extended_fuses=0xFE
lopower.bootloader.path=atmega
lopower.bootloader.file=ATmegaBOOT_168_atmega328_pro_8MHz.hex
lopower.bootloader.unlock_bits=0x3F
lopower.bootloader.lock_bits=0x0F
#
# use #if extra_flags==DL2SBA_lowpower to control conditional compiles
#
lopower.build.extra_flags=-DDL2SBA=lowpower
lopower.build.mcu=atmega328p
lopower.build.f_cpu=8000000L
lopower.build.core=arduino
lopower.build.board=AVR_DUEMILANOVE
lopower.build.variant=standard
##############################################################
#
# Entspricht einem DUEMILANOVE
#
# http://arduino.cc/en/Main/ArduinoBoardDuemilanove
#
##############################################################
lopower16.name=DL2SBA Arduino Ultra Low-Power (<2.4V, 16 MHz) w/ ATmega328
lopower16.upload.tool=avrdude
lopower16.upload.protocol=arduino
lopower16.upload.maximum_size=30720
lopower16.upload.maximum_data_size=2048
lopower16.upload.speed=57600
lopower16.bootloader.low_fuses=0xFF
lopower16.bootloader.high_fuses=0xDA
lopower16.bootloader.extended_fuses=0xFE
lopower16.bootloader.path=atmega
lopower16.bootloader.file=ATmegaBOOT_168_atmega328_pro_8MHz.hex
lopower16.bootloader.unlock_bits=0x3F
lopower16.bootloader.lock_bits=0x0F
#
# use #if extra_flags==DL2SBA_lowpower to control conditional compiles
#
lopower16.build.extra_flags=-DDL2SBA=lowpower16
lopower16.build.mcu=atmega328p
lopower16.build.f_cpu=16000000L
lopower16.build.core=arduino
lopower16.build.board=AVR_DUEMILANOVE
lopower16.build.variant=standard