Summary

In this chapter, you learned about shields and carriers, and then worked on some projects using both a shield and a carrier. This was important because you got to focus on the code that you needed to write to collect data without having to fiddle with breakout boards, breadboards, and wires that could come loose and lead to a lot of time spent debugging your code. With the MKR IoT Carrier, you were also able to display the readings on the OLED screen. This is useful for communicating information to users without asking them to connect the device to a computer for serial output. We are collecting data but not storing it.

In the next chapter, we will discuss various strategies for storing this data locally, especially given that the MKR IoT Carrier and the MKR ENV Shield both come with SD card slots.