-
http://interface.khm.de/index.php/lab...nts/arduino-frequency-counter-library
-
http://allthemods.com/project.php?id=342&page=2
-
http://generichid.sourceforge.net/hardware.htm
-
http://hackaday.com/2009/12/27/atmega8-spectrum-analyzer
-
http://www.captain.at/electronic-atmega-dcf77.php
AVR serial howto
http://www.captain.at/electronic-atmega16-serial-port.php
-
http://www.circuitcellar.com/avr2004/Second.html
-
http://www.atoomnet.net/atmega168_avr_rds_decoder_rs232.php
-
http://www.circuitcellar.com/avr2006/winners.htm