Now it's time to move on to the design of the watch; as mentioned before, you can incorporate any kind of sensors you like into the design of your watch, but take into account the size of any component you add. In order to turn your components into a watch, we will base the design on the template shown in Figure 9.3. Ideally use this template to cut the shape out of a 1 mm thick plastic material. This can be any material as long as it's sturdy enough but has some flexibility to it. The plastic material I used, also shown in Figure 9.4, is a fairly common 1 mm plastic material found in arts and crafts stores.

Figure 9.4: The template design for the watch strap

The inspiration for the design comes from traditional wristwatch leather crafts where they often use plastic inlays to make the straps more ridgid. The leather inspiration does not stop there, since we will be using leather as our other casing for the watch, giving the design a nice mix between high and low...