7.1. Introduction

Try these first

1. 1.

   What does an ultrasonic sensor measure?

   Hint

   Think about how sound travels.

2. 2.

   Why do we divide the measured time by 2 in the distance formula?

   Hint

   Recall the echo concept.

3. 3.

   What is the primary function of an ultrasonic sensor?

   • To measure temperature
   • To detect movement
   • To measure distance

   Hint

   Think about the principle of sound waves.

4. 4.

   True or False: Kernel modules can be loaded and unloaded while the system is running.

   • True
   • False

   Hint

   Consider the flexibility of Linux.

5. 5.

   Design a simple application that utilizes the distance gathered from the ultrasonic sensor for a home automation project.

   Hint

   Consider home security or automated lighting scenarios.

6. 6.

   If you were to modify the current kernel module to support multiple sensors at once, what architectural changes would you include?

   Hint

   Think about how to handle additional inputs safely.