Internet of Things

line. First, we will see the simplest program to understand how to execute python code. Then

we will get into the syntax and learn more about python.

Let’s start our first program. We will begin with “Hello World!”.

For the sake of this first exercise, we will simply use the Python interpreter, which permits

us to test our code on the command line one at a time.

Open a terminal window, and type the following command

python

Once you press enter, you will be presented with three greater-than signs >>>

On that prompt type the following command

Print(“Hello World”)

And after pressing enter, you will see “Hello World” back on the terminal window.

You can come out of this interpreter window by entering the following command

exit()

As you can see, how easy it is to run python commands. However, this approach is only suitable

for testing out commands. For the serious type of programming, you can create a file and add

all the commands into that. Once you are done, save the file and close.

Now, let’s see how it works. Create a new file in any text editor you like. If you are on a full

desktop mode, use Leafpad application. If you are using the lite version, use nano editor to cre-

ate file. Enter the commands into a new file and save it with a name “helloworld.py”.

Once you saved the file, on command prompt type the following command to run this file.

python helloworld.py

This will print “Hello World” on the command prompt. It is beyond the scope of this book

to cover Python in details. Hence, I would recommend you to learn the basic of Python.

Exercises

1. Create a basic Raspberry Pi diagram and label its components with their uses.

2. Connect external sources with Pi and test their working.

3. Similar to St Joseph’s case study in the educational sector, a case study for a Pi-related

to manufacturing.

4. What Is PiNet? Explain it in detail.

5. Make a robot by using Raspberry Pi. This time, use Python for programming.

6. What is Arduino? Provide two real-world examples for its effective use.

7. Explain the working and features of an Arduino board other than Uno with a labeled

diagram.

8. Write a user-defined function which displays your name on any screening device.

9. Use an array to get input from a sensor and compute an output.

10. Create a simple example using Boolean values (ON/OFF).

11. Build a program which uses pinMode function and writes an example featuring both

input and output.

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