E (1277) adc_oneshot: adc_oneshot_new_unit(91): adc unit not supported

[jellewie]

We use const uint8_t PAI_IDBits5to8 = 5;

Espressif states:

ADC1:
5 channels: GPIO0 - GPIO4
ADC2:
1 channels: GPIO5

And ADC2 is not allowed/possible with WiFi. We should change our Id pinout

• Move PAI_IDBits5to8 to one of pins 0-4
• Also I believe this is ignored in analog reads, so we can remove this line pinMode(PAI_IDBits5to8, INPUT_PULLUP);