Unit #2-02

Learning Outcome

At the end of this lesson, you will be able to:

• start to understand what a variable is used for

Review

• go over what is programming

  • just a set of instructions

• go over Arduino C++ programming

• go over how to load Ubuntu on linux, running on ChromeOS

sudo apt update
sudo apt full-upgrade
sudo apt install arduino

Lesson

• a variable is just a place to store information, that can change, hence the name

  • we use them in math all the time

  • in programming, we do not use a single letter to represent a variable, we use a word( or several words) to describe it

    • ex: counter, numberOfStudents, totalCost, ...

  • notice how we spell variable names

• go over starting a program from new

  • use the one from last time as an example

  • ensure you add in a proper comment

Activity

• show demo of creating a variable in Arduino

  • show the counting up example

    • see code example below

Daily Assignment

• write a program that adds 1 second to the length of time the LED stays on

  • save it and back it up to GitHub

Extra

• if you finish early, write the "Blink with variable" program in CircuitPython

  • use this as your IDE, ide.mths.ca

  • save this code and back it up to GitHub