Dear lichurbagan,
I would advise you to use another MC and an external ADC. There is no "low cost Osci" around!
I successfully build one with lots of hard personal work any many pitfalls for my Synth. You will need a preamp, lots of experiences with freetos, ADC, ESP-IDF, LCD, ...
I started with ...

Dear Lvhaiyu ,
I have to apologize: Now I think you are a human being. Please excuse me, your post was so far away from my writing that I thought different before.
I have finally solved the problems: great part of it where incomplete compiler include pathes and the wastly spread of subroutines all ...

Hello KI "Lvhaiyu" - or "Hi you"?
Did you really read my topic? Maybe, but because you are a computer, you did not understand nothing.
I clearly stated, that that example did not (!) build.
Your suggestion with Launchpad is pure irony. I stated, that i does not work for me as well (firefox and not ...

For my ESP Box 3 I tried to reconstruct the factory demo. LaunchPad is not working and the firmware for Box-3 (...bin) ist still not available. Please provide it for easy use and reset to delivry status.

I am working with Win 10 and standard ESP-IDF 5.1.1. Using that IDF seems to be more reliable ...