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EMS1EP Lecture 1 Intro to Arduino

EMS1EP Lecture 1 Intro to Arduino. Dr. Robert Ross. Overview (what you should learn today). What this subject is all about (assessment, labs, passing) Electronic components: Switches, LEDs, Resistors, Capacitors, Voltage Regulators, Microcontrollers, The LArduino Development Board.

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EMS1EP Lecture 1 Intro to Arduino

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  1. EMS1EP Lecture 1Intro to Arduino Dr. Robert Ross

  2. Overview (what you should learn today) • What this subject is all about (assessment, labs, passing) • Electronic components: • Switches, LEDs, Resistors, Capacitors, Voltage Regulators, Microcontrollers, • The LArduino Development Board

  3. Lecturer Details Dr. Robert Ross B.CS(Hons)/B.EE(Hons), PhD Robotics Field (La Trobe) Email: R.Ross@latrobe.edu.au Office: BG441 Phone: 9479 1593 Mr.Tommy Huynh (Lab demonstrator) B.EE(Hons), Currently doing a PhD in Robotics Email: Tommy.Huynh@latrobe.edu.au Office: BG417 Phone: 9479 1898

  4. Lectures Outline • The project section of the subject has 6 lectures: • Intro • Digital Inputs • Digital Outputs • Program Flow + Serial Comms • Pulse Width Modulation (PWM) • Analog to Digital Conversion (ADC)

  5. Laboratories Outline • The project section of this subject has 11 laboratory classes (starting week 2): • Solder LArduino PCB • Digital Outputs • Digital Inputs • Debouncing Switches • PWM • ADC 7-8. Minor Project 9-11. Major Project

  6. Lectures for project section of course: Monday 11-12 (week 1,3,4,5,6,7) Labs for project Monday 3-5, Wed 11-1 (Every week starting week 2) Calendar of classes

  7. Assessment Outline • Assessment for EMS1EP: • 35% Laboratory • 15% Oral Presentation • 50% In-class test and report • Of the 35%: • Labs 1-6 are worth 8.3% each • Minor project is worth 15% • Major project is worth 35% (robot) • A section of the in-class test will be related to the project section

  8. Video of final project

  9. Multi-disciplined approach • Australian Council of Engineering Deans report: • Recommendation 3: Engineering schools must develop best-practice engineering education, promote student learning and deliver intended graduate outcomes. Curriculum will be based on sound pedagogy, embrace concepts of inclusivity and be adaptable to new technologies and inter-disciplinary areas. • Valuable to have skills outside your discipline • Project application areas often involve other disciplines

  10. Questions on Assessment?

  11. Electronic Components • Electronic components: • Switches • LEDs • Resistors • Capacitors • Voltage Regulators • Microcontrollers

  12. Switches and Buttons • Switches and buttons allow users to interact with electronic systems • Terms commonly used in place of each other or sometimes together (i.e. push button switch) • Purpose is to make and break electrical circuits (shorts out connection)

  13. Switches and Buttons Typically: • Button: • Button makes the electrical circuit only when pressed (e.g. keyboard) • Switch: • Switch allows the making of the circuit to be toggled (on/off) (or from one circuit to another) (e.g. light switch

  14. LEDs (Light Emitting Diodes) • LEDs are semiconductor light sources • They are diodes (can only be used in one direction) • Require 1.6V – 3V to turn on • Very bright LEDs are starting to be used for room lighting • 2 Legs: • Longer leg goes to positive • Shorter leg goes to ground • At the base of the LED the shorter leg side is flat not round

  15. Resistors • Has a specified value of electrical resistance to resist current flow • Colour codes used to decode the value of the resistor

  16. Capacitors • Stores electrical energy electrostatically in an electric field • Lots of different types of capacitors • Sometimes polarised (must be connected the correct way around) sometimes not • Multiple uses: • Blocking DC voltages • Tuning radio frequencies • Smoothing out power supplies

  17. Voltage Regulators • Maintain a constant voltage level • Input voltage may vary but output voltage should remain constant (provided input is in correct range) • Fixed v’s Adjustable • Linear v’s Switched

  18. Microcontrollers • Programmable devices which include a CPU (Central Processing Unit) and some other devices (ADC, Timers, ect.) • Looks like a silicon chip with lots of pins • Microcontrollers often sense data, process the data and then control something using their pins to connect to the outside world

  19. What is an Arduino? • Open-source electronics prototyping platform • Simple to use software and hardware • Software has useful, easy libraries which can be used • Hardware based on AVR microcontroller with a bootloader

  20. Why use Arduino? • Good libraries – quick to prototype • Easy to learn • Good for general purpose applications • Comparatively cheap prototype

  21. Some Arduino References • “Arduino Cookbook”. Michael Margolis, O’Reilly, 2011 • http://www.arduino.cc/ • http://www.ladyada.net/learn/arduino/

  22. Some Arduino projects

  23. $100+ $40 $1+ So why doesn‘t everyone use Arduinos? • Price • Performance • Not cross-platform

  24. LArduino Board • Ardunio is open source – anyone is free to create and publish their own hardware versions • La Trobe Uni have created the LArduino • Specs: • AT-Mega168 Microcontroller • 16MHz Crystal • 4 ADC Pins • 7 Digital Pins (with 5 having PWM options for analog output) • Bootloader: Uno • Program via USB Port • Selectable USB/External power (external 6V)

  25. LArduino Board • Microcontroller specs: • 16KB Flash Memory • 1KB RAM • Frequency: 20MHz max • 8-bit CPU • 8 channel, 10bit ADC • Around the power of a 286 desktop computer (circa. 1982)

  26. Verify (compile code) Arduino IDE - Terminology • Sketch – A program that you write • setup() – Function run once when device started – used for initialisations • loop() – Infinite loop function – runs forever Program device Serial monitor

  27. Arduino IDE – Setting up Before code is run a few things need to be setup Tools->Board->”Arduino Uno” Tools->Serial Port-> What is the Arduino plugged into? Easiest way to determine this is to unplug the arduino and check the available ports Then plug the Arduino in and choose the new port that has appeared Free to download: http://arduino.cc/en/Main/Software

  28. Summary(What you learnt in this session) • Where your marks will all come from • Different electronic components • Microcontrollers are small programmable devices we write code for to control things • Arduinos are microcontrollers with lots of simple to use high level instructions • With microcontrollers we are often controlling the voltage levels on the actual pins between high and low or reading these values

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