EP0401 Python Programming for IoT - Lesson 1 - RPi setup & headless mode new

Lesson Overview

  • Title: Setting up the Python programming environment in a single board computer

  • Lecturer: S.P. Chong

  • Date: 17/10/2022

Objectives

  • Overview of the module:

    • Topics to be covered

    • Assessments and schedule

  • Learn to set up the Python programming environment on Raspberry Pi (a single board computer)

  • Key features of Raspberry Pi

  • Required hardware for using Raspberry Pi

  • Using the IDE (Integrated Development Environment)

Topics & Schedule

Term 1

  • Lesson 1: Raspberry Pi setup (including headless mode)

  • Lesson 2: Python basics (+ Python OOP)

  • Lesson 3: Physical computing

  • Lesson 4: Sensor data collection, storage, visualization & analytics

  • Lesson 5: Sensor data upload to cloud & notifications

  • Quiz: 30% before MST

Term 2

  • Lesson 6: A simple web server

  • Lesson 7: GUI (Graphical User Interface)

  • Mini Project: 20% CD after vacation, 40% implementation before exam

Assessments

Online Quiz (30%)

  • Coverage: Lessons 1 to 5

  • Format: 75-90 MCQs, closed book, using Lock-down Browser

  • Duration: 1.5 hours

  • Week: Before MST

Mini Project (60%)

  • Requirements: Use Python on Raspberry Pi to implement an IoT application

  • Work in pairs

  • Present idea for critique in the 1st week of the 2nd term before implementation

Internet of Things (IoT)

  • Definition: “Things” connected to the internet to exchange data

  • Purpose: Improves lives, work, and play

  • Application Example: Intruder detection system notifying homeowners with photographs during absence.

  • Further Questions: What sensors are used? What cloud platform? (Hint: Google)

Key Features of Raspberry Pi 3 Model B+

  • Processor:

    • 1.4GHz 64-bit quad-core processor

  • Connectivity:

    • Dual-band wireless LAN

    • Bluetooth 4.2/BLE

    • Faster Ethernet

  • Additional Features:

    • Power-over-Ethernet support (with separate PoE HAT)

Technical Terminology to Understand

  • 64-bit processor

  • Quad-core processor

  • Dual-band wireless LAN

  • BLE (Bluetooth Low Energy)

  • Ethernet

  • PoE HAT (Power over Ethernet Hardware Attached on Top)

Raspberry Pi Hardware Requirements

  • Essential Hardware:

    • Keyboard

    • HD monitor (with HDMI cable)

    • Mouse

    • 5V 2.5A adaptor

    • Micro SD card (16GB or higher)

  • Usage: Raspberry Pi as a CPU

Setting up the Raspberry Pi OS (Operating System)

Key Steps:

  1. Download NOOBS (New Out of the Box Software) from the official website.

  2. Download SD Formatter for Windows and format the SD card.

  3. Unzip NOOBS into the SD card.

  4. Insert the SD card into Raspberry Pi; connect mouse, keyboard, monitor, and power.

Writing & Running Your First Python Program

  1. Click on: Raspberry Pi > Programming > Python 3 (IDLE)

  2. Enter code line by line in the Python Shell for immediate interpretation.

  3. Create a new file by selecting: File > New File.

  4. Import necessary libraries, set GPIO mode, and configure output pins.

  5. Program while loops for consistent execution.

  6. Save your file as "BlinkLED" and run it with F5.

Lab Exercises

  • Exercise 1.1: Understanding computer terms

  • Exercise 1.2: Exploring Raspberry Pi details

  • Exercise 1.3: Setting up the Raspberry Pi OS

  • Exercise 1.4: Writing your first Python program

Headless Mode Setup for Raspberry Pi

Steps:

  1. Ensure authentication through a laptop without peripherals.

  2. Connect laptops and Raspberry Pi on the same Local Area Network (LAN).

  3. Set static IP addresses for both devices.

  4. Enable VNC for remote desktop access.

  5. Use downloaded VNC Viewer for connection.

Conclusion

  • This lesson introduces essential concepts of Python programming and hands-on Raspberry Pi usage. Understanding the IoT applications and using Raspberry Pi will enhance practical computing skills.