SEN0508 - pull-up resistor required?
Can someone please confirm that the SEN0508 non-contact liquid level sensor requires a pull-up resistor? This is what the Arduino sample code seems to suggest but I'm not familiar enough with Arduino to say for sure. I can't see it mentioned anywhere else in the documentation.
For Arduino development board, it's has inbuilt pull-up resistor, so there is no need for an external one.
Hope it can help.Tonny12138
Experimentation seems to suggest that yes, it does. And part of the problem was that I had it connected to an ESP32 pin that doesn't have an internal pull-up resistor.TomCook