Have you ever come home to see your beloved house plant wilted and wondered if you had watered it too much, too little, or even forgot to water it at all? With a budget of $20, you can make a simple DIY soil moisture sensor that displays information about your plant's soil and when you should water it. Not only will your plant be green and healthy, but you'll also learn a little bit of engineering and coding along the way. Without further ado, let's get started! You'll need 5