Arduino_uSDX_Pico_FFT - Main code for Ajan-5, it runs at Raspberry Pi Pico, compiled with Arduino IDE (look "Arduino IDE setup and notes" below). Aux - Files used as reference.

Plug Function waveform into port A3 of Arduino Mega board, Ground to GND. Can view FFT results in Serial port at 115200 baud. Prints all Amplitude data first, then ...