Hi @MSant.1 , the APWorkbench sw runs only on dedicate audio board (equipped with STA321MP), while for the NUCLEO development board you should use the Unicleo GUI. However the microphone is not supported from this GUI, so I believe that if you want to use a dedicated GUI you should use APWlink environment (plugging the STEVAL-MIC001V1 on the STEVAL-MKI126V1 board), while if you want to write a project it is better to use the Nucleo environment (FP-AUD-BVLINK1). Regards
