In this chapter, we had a look at some different analog sensors that might be suitable for working with wearables. What defines an analog sensor is that they can output a range of values, not just 0s and 1s. The selection of sensors used in this chapter is just a small portion of the sensors available on the market, and if you can think of something that you might want to sense in the future, there is a good chance there is a sensor available for it.

The purpose of the chapter has also been to introduce readers not familiar with Arduino programming to some new commands, as well as two different communication protocols for interfacing with more complex sensors. Sensors that use some form of communication protocol are often referred to as complex sensors, and the ones that don't, such as the bend sensor and LDR used in this chapter, are normally just called sensors.

Finding the right sensor for your project may be tricky sometimes, and some of the sensors available can be expensive....