In this chapter, we discovered a more reliable and precise way to get access to the BeagleBone Black's ADCs and learned how we can get access to an I2C device by using a raw access to the bus. This was done in order to be able to manage a pressure sensor and a contactless temperature sensor. Also, we discovered how to connect a tiny LCD via the SPI bus to our BeagleBone Black board to add a little user interface.
In the next chapter, we'll try to implement a plant monitor to measure what happens to our beloved plants! Also, we will discover how we can periodically take some pictures and then publish them on a Facebook account.
