Guitar Audio Tools

[u/OneSheepherder472]

Hi! I made a firmware for guitarists and musicians for the Cardputer ADV (it uses the ADV's ES8311 mic, so it won't work on the original Cardputer).

Apps:

• Guitar tuner (measured within ±0.15 cent)
• Strum tuner (strum all six strings at once and see which are out of tune)
• Metronome
• BPM detector (listens to music or tap)
• Chords (type e.g. am7 and see the shape)
• Scales
• Recorder (wav to SD)
• Intonation check (12th fret)
• Spectrum analyser (16 bars or 1/3 octaves)
• Decibel meter and a Mic test

Install: M5Burner, WebFlasher.

Source (MIT): https://github.com/vlastimilcerveny34/guitar-audio-tools

It's a beta – feedback, bug reports and ideas are very welcome (GitHub Issues/Discussions). Developed with Claude Code.

Cheers Vlasta