Project: Boolean
In this project, you will come up with a micro:bit program that uses Boolean variables, Boolean operators, and possibly the random function.
Project Expectations
Follow the design thinking approach and make sure your project meets these specifications:
- More than two Boolean variables are implemented in a meaningful way.
- The micro:bit program uses Booleans in a way that is integral to the program.
- The program compiles and runs as intended and includes meaningful comments in code.
- Provide the written Reflection Diary entry.
Input
Don’t forget to consider all the different inputs available to you through the micro:bit.
Available inputs
- Acceleration
- Light level
- Rotation
- Button is pressed
- Compass heading
- Temperature
- Running time
- On shake
- On button pressed
- On logo down
- On logo up
- On pin pressed
- On screen down
- On screen up
- Pin is pressed
Project Ideas
Use Boolean variables and/or random values to create:
- A board game, game pieces, and holder for the micro:bit (or improve your board game from Unit 3: Variables)
- A mod of some sort to a current/existing board game
- A micro:bit version of a Magic Eight Ball
Project Examples
Sunscreen Monitor
The micro:bit is attached to a bottle of sunscreen and provides information about the temperature and if you need sunscreen:
- When you shake the micro:bit, it reports the current temperature in degrees Fahrenheit.
- Button A displays an animation to tell you whether or not you should use sunscreen (on sunny or cloudy days but not at night or indoors).
- Button B measures the light level, and if it is above 70 degrees AND very bright, it will display a sun icon. If it is above 70 degrees and less bright, it will display a cloudy symbol. If it is dark, it will display a nighttime icon. Check it out in action here: youtu.be/VmD-dcZZQFc (0:18)
Sunscreen code
input.onButtonPressed(Button.B, () => {
if (128 > input.lightLevel() && 0 < input.lightLevel() && input.temperature() > 22) {
basic.showLeds(`
. # . # .
# . . . #
. . . . .
. . . . .
. . . . .
`)
basic.showLeds(`
. # # # .
# . . . #
. . . . .
. . . . .
. . . . .
`)
basic.showLeds(`
. # # # .
# . . . #
. # . # .
. . . . .
. . . . .
`)
basic.showLeds(`
. # # # .
# . . . #
. # # # .
. . . . .
. . . . .
`)
basic.showLeds(`
. . . . .
. # . # .
. . . . .
. # # # .
# . . . #
`)
} else {
basic.showLeds(`
# . . . .
. . . . .
. . . . .
. . . . .
. . . . .
`)
basic.showLeds(`
. # . . .
# # . . .
. . . . .
. . . . .
. . . . .
`)
basic.showLeds(`
. . # . .
. . # . .
# # # . .
. . . . .
. . . . .
`)
basic.showLeds(`
. . # # .
. . # . .
# # # . .
# . . # .
. . . . .
`)
basic.showLeds(`
. . # # #
. . # . .
# # # . .
# . . # .
# . . . #
`)
basic.showLeds(`
. . . . .
. # . # .
. . . . .
# . . . #
. # # # .
`)
}
})
input.onButtonPressed(Button.A, () => {
if (input.temperature() < 22 && input.temperature() > 6) {
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
basic.showLeds(`
. . . . .
. . # . .
. # # # .
. . # . .
. . . . .
`)
basic.showLeds(`
. . . . .
. . . . .
. . . . .
. . . . .
. . . . .
`)
basic.showLeds(`
# # # # #
# # # # #
# # # # #
# # # # #
# # # # #
`)
} else {
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
basic.showLeds(`
. . . . .
. . . . .
. . . . .
. . . . .
. . . . .
`)
basic.showLeds(`
# # # # #
# . . . #
# . . . #
# . . . #
# # # # #
`)
}
})
input.onGesture(Gesture.Shake, () => {
basic.clearScreen()
basic.showNumber(input.temperature() * 2 + 32)
})Solution link: Sunscreen Monitor
Two-player game
This is an example of a board game in which the micro:bit displays an arrow pointing in a random direction. The paper legend indicates different actions the player must take, and it uses a Boolean variable to keep track of whose turn it is.
Board Game: Use boolean variables and random values as part of a board game (or improve your Board Game from the Variables lesson). Make the board and pieces and a holder for the micro:bit. Try modding a current board game.
Board game arrow code
let player1Turn = false
let spin = 0
let delay = 0
input.onGesture(Gesture.Shake, () => {
if (player1Turn == true && randint(0, 4) < 3) {
basic.clearScreen()
delay = 0
while (delay < 500) {
basic.showLeds(`
. . # . .
. # # . .
# # # # .
. # # . .
. . # . .
`)
delay += 50
basic.pause(delay)
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . . . .
`)
delay += 50
basic.pause(delay)
basic.showLeds(`
. . # . .
. . # # .
. # # # #
. . # # .
. . # . .
`)
delay += 50
basic.pause(delay)
basic.showLeds(`
. . . . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
basic.pause(delay)
delay += 50
player1Turn = false
}
} else if (player1Turn) {
basic.showString("Crash!")
player1Turn = false
} else if (randint(0, 4) < 3) {
basic.clearScreen()
delay = 0
while (delay < 500) {
basic.showLeds(`
. . # . .
. # # . #
# # # # #
. # # . #
. . # . .
`)
delay += 50
basic.pause(delay)
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. # # # .
`)
delay += 50
basic.pause(delay)
basic.showLeds(`
. . # . .
# . # # .
# # # # #
# . # # .
. . # . .
`)
delay += 50
basic.pause(delay)
basic.showLeds(`
. # # # .
. . # . .
# # # # #
. # # # .
. . # . .
`)
basic.pause(delay)
delay += 50
player1Turn = true
}
} else {
basic.showString("Crash!")
player1Turn = true
}
})
basic.forever(() => {
})
delay = 0
spin = 0
player1Turn = trueThis is an example of a board game in which the micro:bit displays an arrow pointing in a random direction. The paper legend indicates different actions the player must take.
Here is a portion of the board game’s code. A boolean variable is used to determine whose turn it is. If player1Turn is false, then it’s player 2’s turn. A random number is generated to show the arrow seventy-five percent of the time (for values of 0, 1, or 2).
let player1Turn = false;
input.onGesture(Gesture.Shake, () => {
if (player1Turn == true && randint(0, 4) < 3) {
}
})Solution link: Arrows Board Game
Reflection
Write a short reflection of about 150–300 words, addressing the following points:
- How did you incorporate boolean variables into your micro:bit program?
- How did you incorporate boolean operators into your micro:bit program?
- Describe something in your project that you are proud of.
- If you had more time to work on this project, describe what you might add or change.
- Publish your MakeCode program and include the link.