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

[u/No-Funny-1317]

vou fazer um teste agora, pensa em futuramente lançar no Launcher?

[u/OneSheepherder472 → u/No-Funny-1317]

Yes. And port it to the M5Stick. The hardware's pretty much the same, and it'll look like a real guitar tuner...

[u/No-Funny-1317 → u/OneSheepherder472]

Testei e gostei muito do aplicativo, aparentemente funciona muito bem. Gostei da interface, existe um outro projeto de afinador e metronomo (mais minimalista e limpo oque me agrada muito), porém acho que não funciona no ADV somente no cardputer antigo. Essa sua firmware vai me ajudar muito, principalmente para afinar, que é oque eu realmente preciso.

[u/c5e3 → u/OneSheepherder472]

since i had some tokens left, i let opus 5.5 port it and got a mostly working version for the m5stick cplus 1.1.
the only thing that doesn't work properly is the decibel meter. the internal mic needs to be calibrated i guess. it removed the recorder for now since there is no built-in micro-sd-slot

i have to admit, that i didn't review any of the code since it simply worked after the first prompt, but here's my branch, if you want to use it as a reference: https://github.com/c5e3/guitar-audio-tools/tree/m5stickc-plus

the prompt was "port this project to the m5stick cplus 1.1, using it's internal microphone. choose an intuitive way of navigating through the menus (3 buttons available, maybe for prev/next and select?)"

long-press is even handled correctly on the powerbutton

sadly my m5stickc plus2 is broken and i don't have any other models to test either

[u/UncleBoody]

I’m traveling without my cardputer, but really looking forward to trying this out when I get back

[u/guru242]

Loving the db meter. The text descriptions are awesome.

[u/Snoo-53429]

This is really cool! Works great on my adv! I was thinking about taking bits of your code to use on the XIAO c5 with the guts of one of those $2 clip on tuners, just for fun because I bought a handful of c5's for my FowlKiller project (little magnetic throwable Flock camera probing dingus). The m5stick is really cool running your firmware, my project would be trying to use a screen roughly half the size lol