NanoVNA VS ESP8266Audio

Are you trying to build your own nanoVNA? There are many different versions of the nanoVNA on the internet, google "nanovna source" and see how they implemented the signal generator part.

Wanna do the community a favor and fork edy555’s repository here? Study the issues and comments in the repo along with the NanoVNA’s complaints all over Amazon. Coming up with these decisions on your own might serve to be vastly more valuable than letting the community tell you what to do.

I bought mine from Nooelec. They're listed as an official distributor on edy555's GitHub repo.

Having an issue here using the ESP8266 Audio library (found here).

The Arduino sketch that works for me reads the data out of PROGMEM. When I use that same raw data in ESPhome, it crashes my ESP too. Would there be a way to play from PROGMEM in ESPhome too? Other ways in the library are a function or streaming, but that doesn't fit my use case unfortunately.

If you're getting started, the ESP8266Audio library makes it easy to play audio with the Arduino toolchain. For more advanced use cases, Espressif's own ESP-ADF has a lot of useful features and examples.

Not sure where you got that. According to the ESP8266Audio documentation, the default GPIOs are 2, 15, and 3. You're trying to change 15 to 13.

ESP8266Audio is really fun and easy to use

The ESP32 might suffice for that then, depending on what you consider to be basic applications. It certainly has wifi and bluetooth functionality and you can do audio with an extra chip or an interesting workaround. The ESP32-A1S module even has the necessary chip integrated but you'll likely need to roll a custom PCB for it.

I am simply using the sample code from here. https://github.com/earlephilhower/ESP8266Audio