Now, it's time for some serious construction in order to actually fit our project to the door. Mind you, this project was based on a standard lock used in Sweden; if you have a different door lock, this design might need some heavy modification. The goal was to keep the design of the construction as simple and transparent for this reason. I would suggest that you start by taking a look at Figure 6.8 to get a general idea of the finished result before you get started.
In Figure 6.5, you will find the design measurement for the construction that holds the motor, shield, and Arduino board in place: