In this chapter, you have learned how to interact with and use RGB LEDs, how to choose and buy RGB LED strips that will work with the Raspberry Pi. We then understood the Logic-level conversion for interfacing with devices that do not run at the Raspberry Pi's 3.3V. Further we studied soldering basics and how to put headers on devices that arrive needing them. Finally we learnt how to wire in the LED's and stick them onto your robot, writing code to make them light, bringing LED code in with other robot behaviors and how the HSV color system works and can be used to generate rainbows
In the next chapter, we will look at servo motors, and build a pan and tilt mechanism for moving sensors.
