water not sliding from the pad
In my final project, one of the aspect is to detect water leakage in the form of drops. For that i am using step response and i am connecting the RX-TX pins to this pad containing two set of traces which are close to each other but not connected. When a droplet drops onto the pad, the readings jumps from 110K to 130K but the water droplet doesn't slide on its own. Because of this the microcontroller will get false reading until the drop slides and the pad is dried. In the video link i shared below, i am manually drying the pad, something that won't be possible in the final execution. I am fine with minimal false reading but currently the false readings are way more than true readings.
video link: https://youtu.be/mG-Mf-oHizA
image of the pad: https://fabacademy.org/2022/labs/vigyanashram/students/fenil-chandarana/assets/img/week12/week12x72cr.jpg
Any suggestions?