In this chapter, we experimented a bit with the TSL2561 sensor and the accelerometer sensors. The TSL2561 sensor may seem a bit over the top for this project, since you can make the bike gloves using an LDR sensor such as the one in Chapter 2, Working with Sensors. Besides being a more accurate light sensor, the TSL2561 sensor has one advantage in regards to this project. Since the pin layout is limited on the FLORA board, we save an analog pin. Using a digital sensor we can communicate with over I2C. The same protocol is what we used to communicate with the accelerometer. Using this sensor, we have also introduced the concept of gesture tracking. This is one possible use of the accelerometer. As your programming knowledge progresses, this sensor might offer new possibilities. We have also learned a bit about how we can finalize projects and how to power them with external power sources. In the following chapters, we will keep on using batteries to power our project and dig deeper...