/diy/ - Do It Yourself

Any of you guys used one of these moisture sensors before? There's a ton of tutorials on the internet, so they can't be total crap, but I'm also seeing people say the readings are almost too noisy to be useful. Probably gonna buy the kit anyway cause that's a pretty good price for just an arduino these days, but I'm wondering if it'd be a better idea to just set the pumps on a schedule.