Hi, I use an ESP32 to send short 1V signals to an industrial washer's PCB.
As there were some annoying little back signals coming from the PCB I added a diode type 1N4007 to the signal output.
I found that, against the expected, using the ledcWrite() function the output voltage increased from 1V to around 1.4V. It does not happen when use dacWrite().
I'm very far to be an expert but I'd like to know what's the reason behind this. Maybe someone could help me to understand this behavior.