It sounds to me that you do not have the 10K resistor connected as you intend. Can you post a photo of your wiring?
If you disconnect the 4k7 resistor, do you get a stable reading of zero from the analog pin?
It sounds to me that you do not have the 10K resistor connected as you intend. Can you post a photo of your wiring?
If you disconnect the 4k7 resistor, do you get a stable reading of zero from the analog pin?