Basic Wetness Sensor

So I’ve had the idea for a while to try and automate the growing of plants so I need to be able to tell if something’s wet or not. Here’s a video:

Basically the hookup process is that of a regular analog sensor with this in it’s place. There’s a 10k pullup resistor as the voltage divider.

Here’s the source for the Arduino.

That’s pretty complex but I was trying to make the light changes more drastic so it would show up in the video better.

Here are some pictures of the build process:

Thanks for reading!

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