Let's take a look at the hardware configuration just to refresh our memory.
Here is the schematic used for this project:

We used the same configuration in Chapter 3, Controlling Outputs Using the Galileo Board. This is the relay that we will use in this chapter:

If you want to go back to the specific instructions as to how to do this, you can go back to Chapter 3, Controlling Outputs Using the Galileo Board.
The following picture will show you my final configuration:
