As we conclude, here is a list of questions for you to test your knowledge of this chapter's material. You will find the answers in the Assessments section of the book:
- Your servo does not rotate fully to the left or right. Why is this and how can you fix this?
- Your servo is groaning at one or both of its extreme left/right positions. Why?
- What advantage does an H-Bridge provide over a single transistor when controlling DC motors?
- You are using an L293D H-Bridge IC. You follow the instructions as per the datasheet but cannot get your motor to brake. Why?
- Why do your 5-volt motors spin slower when connected to an H-Bridge using an L293D compared to connecting the motor directly to a 5-volt source?
- You have a stepper motor that will not work – it vibrates, but will not turn. What could be the problem?
- Can you drive a stepper motor directly from four Raspberry Pis' GPIO pins?
