It is finally time to get your hands dirty! In this chapter, we will build an automatic pet food dispenser. It will hold one portion of pet food and can be controlled from anywhere in the world via MQTT, including one of the many available MQTT apps for Android or iOS.
The smart pet food dispenser is easy to build and will show you how to create smart devices with only a little effort. Just by using a servo motor, there are a lot of different smart devices that you will be able to make after following along with this chapter.
If you don't have a pet, you might want to build yourself the first part of a breakfast robot—a cereal dispenser. The setup and code will be exactly the same. You can decide what the dispenser should hold—maybe sweets or bubblegum!
The following topics will be covered in this chapter:
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