Sample Surveys with microbit

Today we are going to use microbits to collect data for our sample surveys. Follow the tutorial to set up your survey!

Step 1

First we are going to create three variables ||variables(total)||, ||variables(bitter)||, and ||variables(notbitter)|| Place the three blocks in the ||basic:onstart||

let notbitter = 0
let bitter = 0
let total = 0
total = 0
bitter = 0
notbitter = 0

Step 2

Next, we are going to add a little string using ||basic.showString()|| to display what our program does

let notbitter = 0
let bitter = 0
let total = 0
total = 0
bitter = 0
notbitter = 0
basic.showString("TRAIT COUNTER")

Step 3

Now, we need to set up a way to collect information for our survey, using the buttons on the microbit. First, let’s set up our ||variables(bitter)|| button using ||input.onButtonPressed(Button.A)||, and have it display how many people have selected bitter.

input.onButtonPressed(Button.A, function () {
    bitter += 1
    basic.showNumber(bitter)
})

Step 4

Now we need to do the same thing for our other survey answer, ||variables(notbitter)||.

input.onButtonPressed(Button.B, function () {
    notbitter += 1
    basic.showNumber(notbitter)
})

Step 5

Finally, let’s use ||input.onButtonPressed(Button.B)|| to calculate and show the total number of survey respondents. To do this, we need to use a ||math.plus|| block.

input.onButtonPressed(Button.AB, function () {
    total = bitter + notbitter
    basic.showString("BITTER")
    basic.showNumber(bitter)
    basic.showString("NOT BITTER")
    basic.showNumber(notbitter)
    basic.showString("TOTAL")
    basic.showNumber(total)
})

Step 6

That’s it! Your entire program should look like the below, and you’re all set to load it onto your microbit, and start surveying people!

let notbitter = 0
let bitter = 0
let total = 0
total = 0
bitter = 0
notbitter = 0
basic.showString("TRAIT COUNTER")

input.onButtonPressed(Button.A, function () {
    bitter += 1
    basic.showNumber(bitter)
})
input.onButtonPressed(Button.AB, function () {
    total = bitter + notbitter
    basic.showString("BITTER")
    basic.showNumber(bitter)
    basic.showString("NOT BITTER")
    basic.showNumber(notbitter)
    basic.showString("TOTAL")
    basic.showNumber(total)
})
input.onButtonPressed(Button.B, function () {
    notbitter += 1
    basic.showNumber(notbitter)
})