Thingiverse
Spectrum analyzer visualizer and amplifier MAX7219 32x8 LED by tyfoza
by Thingiverse
Last crawled date: 4 years, 6 months ago
Case for project of audio spectrum visualiser and analyzer with arduino board (uno or nano)
Circuit and code: https://create.arduino.cc/projecthub/shajeeb/32-band-audio-spectrum-visualizer-analyzer-902f51
front side
matrix display 32x8 LED MAX7219
volume button
top side
any panel button
back side
jack 3.5mm socket
12VDC power connector socket
any audio repro socket
inside
arduino uno
audio amplifier module Yamaha YDA138-E 2x12W (12V)
I used old linear regulator (voltage stabizer) with little heat sink. Output voltage is connected to arduino VIN. Power loss is about 2W (Input 12V, output 6V; 6V×300mA=1,8W). My cheap arduino clone is too hot if it connect to 12V directly through co-axial power connector.
Tip for repro case: https://www.thingiverse.com/thing:4750820
Circuit and code: https://create.arduino.cc/projecthub/shajeeb/32-band-audio-spectrum-visualizer-analyzer-902f51
front side
matrix display 32x8 LED MAX7219
volume button
top side
any panel button
back side
jack 3.5mm socket
12VDC power connector socket
any audio repro socket
inside
arduino uno
audio amplifier module Yamaha YDA138-E 2x12W (12V)
I used old linear regulator (voltage stabizer) with little heat sink. Output voltage is connected to arduino VIN. Power loss is about 2W (Input 12V, output 6V; 6V×300mA=1,8W). My cheap arduino clone is too hot if it connect to 12V directly through co-axial power connector.
Tip for repro case: https://www.thingiverse.com/thing:4750820