Sound Meter

PCB Electronics


PCB and Arduino code for a sound level meter. Can be used as a spectrum analyser, or as a scrolling sound level meter.


  • Bi-colour 8x8 LED matrix
  • Microphone and built in amplifier
  • ATMEGA328P with Arduino boot-loader
  • 5V operation @ 16Mhz
  • Mini USB power connector
  • FTDI programming port
  • ICSP port


This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Creative Commons License
Designed by Richard Hawthorn
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