Hey :3

I just saw this and am looking to build upon it. Thanks for making it! I opened it in platformIO but it needs the ArduinoFFT like you say. As you mentioned the devel branch, do you know roughly which version of that branch you used? I just want to make sure I have the right one. I get lots of compile errors with the latest version and also with the current devel sample which is of course a few years newer. Some stuff has changed.

Even with the 1.5.6 version (the oldest in the platformiIO repos) I get many errors. But I can manually install an older one, I just need to know which you used. I can rewrite it later against the latest but I wanted to check out first if it's what I need.