Change ADC channel

[classic-audio]

This is a very nice project. I am going to build and use.

I have a breadboard up and running the code with one problem.

I am using the ESP32 D1 mini board (with limited GPIO)

The analog port of the project code is not availible (ADC1_CHANNEL05 GPIO33)

I have changed to: #define ADC_CHANNEL ADC1_CHANNEL_0 // GPIO36

The measurement of frequency and voltage (pp) on the display is ok

**B U T I have no oscilloscop signal.

What must I do to fix this problem?**