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// 128x64 SSD1306 OLED Display: https://s.click.aliexpress.com/e/_DCYdWXb // 128x64 SSD1306 OLED Display (smaller): https://s.click.aliexpress.com/e/_DCKdvnh ...

Original code is from HAZI TECH. I modified the code, add bar mode and peak hold. I build this using spare Arduino Nano and MAX7219 matrix display which I have been using in my previous DIY. So I just ...

These days, streaming services are a great way to listen to music or podcasts on your computer or on the go. However, they lack one feature of the MP3 players and streamers of old: visualizations!

[El Artis] just finished building an audio spectrum analyzer that uses a character LCD. The uses an Arduino to drive the display, but unlike other meters that use the microcontroller for analysis, [El ...