@WiFive in regards to isolating RTC functions: No, haven't tried that since if we only have something connected to ADC 0 I still have a problem (but you are right that we might be able to get rid of the cross talk from other channels by trying that). @fly135 in regards to impedance: We have a voltag...

Correct, even if some of the other ADC1 pins is setup to UART, digital input pin or other pherpherals, then adding a piece of wire to this pin will still influence ADC0 reading. In regards to the green line. On that picture we are where both using channel 0, channel 3, channel 6 and channel 7. The d...

Hi We are a company who have used the ESP WROOM 32 (and now ESP WROOM 32D) for a commercial product. Unfortunately we have failed the final EMC test. To be more specific the radiated RF immunity test. Especially in the 80 to 180 MHz range we have fluctuating analog measurements. Our system has a lot...