pxt-calliope/docs/projects/love-meter.md
2018-04-21 10:52:09 -07:00

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# Love meter
Make a love meter, how sweet! The @boardname@ is feeling the love, then sometimes not so much!
## Step 1
Let's build a **LOVE METER** machine. Place a ``||input:on pin pressed||`` block to run code
when pin ``P0`` is pressed.
```blocks
input.onPinPressed(TouchPin.P0, () => {
});
```
## Step 2
Using ``||basic:show number||`` and ``||Math:pick random||`` blocks,
show a random number from 0 to 100 when pin ``P0`` is pressed.
```blocks
input.onPinPressed(TouchPin.P0, () => {
basic.showNumber(Math.randomInt(101));
});
```
## Step 3
Show ``"LOVE METER"`` on the screen when the @boardname@ starts.
```blocks
basic.showString("LOVE METER");
input.onPinPressed(TouchPin.P0, () => {
basic.showNumber(Math.randomInt(101));
});
```
## Step 4
Click ``|Download|`` to transfer your code in your @boardname@. Hold the ``GND`` pin with other hand and press pin ``P0`` with the other hand to trigger this code.