• For a larger display this is a 30 dot stereo VU meter utilising PIC microcontroller and a MAX7216 LED driver and LDR resistor for auto dimming. Push button allows for selection of display modes. This is 2 sided component board for more soldering practice. LEDs are mounted on front and all active and passive components are on solder side. You can populate the board with 2x5 rectangular or 3mm round LEDs.
  
  Original work with design description and firmware request and funtionality can be found at  S-O webnode.cz  website
  
  
  
  Features

     Microcontroller sampling of audio
     Log display
     Linear display
     Dot / Bar mode
     Waterfall fall
     Peak hold
  
   

  Documents

     Schematic
     Gerber files
     PCB layout files   (easyEDA)
     Bill of Materials
     PIC16F1705
     MAX7219
     Firmware   from original designer