In the previous chapter, you learned how to create a sensor app that runs on Raspberry Pi. You also learned some basic principles of sampling and error correction and how to persist your sensed data.
In this chapter, we'll focus more on how to build an actuator, and prepare it for use in the Internet of Things. The chapter will cover:
- The basics of control parameters
- Using relays to control equipment
- Persisting control states
- Logging important control events
