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PCB/SoundMeter1.1 add pcb and images Aug 8, 2015
code add bom and code examples Aug 8, 2015
docs add bom and code examples Aug 8, 2015
images add images Jan 2, 2016
.gitignore add readme Aug 8, 2015 updated readme Nov 10, 2016


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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