pxt-calliope/docs/lessons/love-meter/challenges.md
2016-05-26 15:24:10 -07:00

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# love meter blocks challenges
Create a love meter with the micro:bit
## Before we get started
You should work on these challenges after the following the [love meter activity](/lessons/love-meter/activity)
```blocks
input.onPinPressed(TouchPin.P0, () => {
let x = Math.random(10)
basic.showNumber(x)
})
```
### Challenge 1
Add a pause of 3000 milliseconds (3 seconds) after showing the number so that the number won't immediately disappear in the next challenge.
```blocks
input.onPinPressed(TouchPin.P0, () => {
let x = Math.random(10)
basic.showNumber(x)
basic.pause(3000)
})
```
### Challenge 2
If the rating **x** is between *0* and *3* (strictly less than *4*), display the text "HORRIBLE!".
```blocks
input.onPinPressed(TouchPin.P0, () => {
let x = Math.random(10)
basic.showNumber(x)
basic.pause(3000)
if (x < 4) {
basic.showString("HORRIBLE")
}
})
```
### Challenge 3
**If** the rating is between 4 and 7, display the text "MEDIOCRE!" **else** display the text "MATCHED!"
```blocks
input.onPinPressed(TouchPin.P0, () => {
let x = Math.random(10)
basic.showNumber(x)
basic.pause(3000)
if (x < 4) {
basic.showString("HORRIBLE")
} else if (x < 8) {
basic.showString("MEDIOCRE")
} else {
basic.showString("MATCHED")
}
})
```
### Challenge 4
Use `show LEDs` to display images instead of text for each case.