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.
Designed by Richard Hawthorn