A simple Demo of a spectrumanalyser with SSD1325 and Atmega 328 (Arduino Uno).
Only 32 points for FFT are used to get an bandwidth of about 3kHz. Thank you to these guys for the FFT lib:
Written by: Tom Roberts 11/8/89
Made portable: Malcolm Slaney 12/15/94 malcolm@interval.com
Enhanced: Dimitrios P. Bouras 14 Jun 2006 dbouras@ieee.org
Modified for 8bit values David Keller 10.10.2010