Graphic audio spectrum analyzer little

Graphic audio spectrum analyzer little

Module of graphic spectrum audio analyzer - little

Parameters :

  • 14 display modes
  • power supply 5,5 - 12V, reverse polarity protection
  • current approximately 50mA
  • input adjustable 0,5 – 2,5V
  • input frequency 20 Hz – 20kHz
  • adjustable contrast and intensity of backlight
  • based on ATMEGA32, only single-sided PCB
  • LCD based on ST7565P driver, blue or white background

Operating description

Individual modes are switched by pressing of button (linear mode, logarithmic mode, memory tips mode, measurement mode and setting).

In the setting mode for longer holding the button switches to set the individual values. Short press to go to the next desired value, long press to set the value, alternately up and down. After going through all the possible values ​​goes back to toggle the modes.

When is power disconnect , settings and the current mode is stored in memory.

 

Circuit, board, gallery

/album/fotogalerie-graphic-audio-analyzer-little/audioanalyzer-little-circuit-jpg1/ /album/fotogalerie-graphic-audio-analyzer-little/audioanalyzer-little-parts-jpg1/ /album/fotogalerie-graphic-audio-analyzer-little/audioanalyzer-little-pcb-jpg1/

Download

 Analyzer_little_partlist.txt (1,1 kB)

Audioanalyzer_little_PCB_neg.pdf (27,8 kB)

Audioanalyzer_little_solder_mask.pdf (6,3 kB)

Audio_analyzer_demo_firmware_v2_0.hex (64,7 kB)

 

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Graphic audio spectrum analyzer little

Date 23/08/2016

By Alex

Subject audio bandwidth

Reply

Hi,
very nice done !
I need something like this, audio spectrum analyzer but from 0 - 4kHz, like in your youtube clip, from 12-18 sec.
yo2ldk ... yah.. dot c_o_m