171 lines
3.7 KiB
Markdown
171 lines
3.7 KiB
Markdown
# Getting started
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Are you ready to build cool BBC micro:bit programs? For each challenge, reorder the blocks to recreate the program.
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* If you haven't done so, open [https://m.pxt.io](/) and create a new **Blocks Editor** project
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## Basic
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### Show leds
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Use the blocks below to draw a figure on the screen. You can redo the smiley face or try something else!
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```shuffle
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basic.showLeds(`
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. . . . .
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. # . # .
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. . . . .
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# . . . #
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. # # # .
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`)
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```
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To transfer your code to the BBC micro:bit,
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* connect your micro:bit to the computer using the USB cable
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* click on **Download**
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* drag&drop the **.hex** file into the **MICROBIT** drive
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* wait till the yellow light is done blinking!
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### Show animation Forever
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Show one image after the other to create an animation.,
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Reorder the blocks to make the micro:bit show a happy, then unhappy face.
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```shuffle
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basic.showLeds(`
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. . . . .
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. # . # .
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. . . . .
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# . . . #
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. # # # .
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`)
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basic.showLeds(`
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. . . . .
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. # . # .
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. . . . .
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. # # # .
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# . . . #
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`)
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```
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### Repeat forever
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Use the ``forever`` block to repeat your code and have a continuous animation.
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Unsuffle the blocks to create a happy, unhappy animation.... or changes the image to make it your own!
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```shuffle
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basic.forever(() => {
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basic.showLeds(`
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. . . . .
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. # . # .
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. . . . .
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# . . . #
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. # # # .
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`)
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basic.showLeds(`
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. . . . .
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. # . # .
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. . . . .
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. # # # .
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# . . . #
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`)
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});
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```
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### Your turn now!
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Use the blocks ``show leds`` and ``forever``
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to create your own custom awesome animation!
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## Inputs
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### Button A and B
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Unshuffle the blocks so that the micro:bit shows "YES" when button A is pressed, and "NO" when B is pressed.
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The key idea is that all the blocks nested under `on button ... pressed` will run when that button is pressed.
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```blocks
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input.onButtonPressed(Button.A, () => {
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basic.showString("AAAAA");
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});
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```
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Try to unshuffle those blocks:
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```shuffle
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input.onButtonPressed(Button.A, () => {
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basic.showString("YES");
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});
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input.onButtonPressed(Button.B, () => {
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basic.showString("NO");
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});
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```
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### Shake
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Using the data from the **accelerometer**, it is possible to detect that the BBC micro:bit is being shaken.
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Unshuffle the code to display a frownie when shaken.
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```shuffle
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input.onGesture(Gesture.Shake, () => {
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basic.showLeds(`
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. . . . .
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. # . # .
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. . . . .
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. # # # .
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# . . . #`);
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});
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```
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### Tilting
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Aside from shake, it is also possible to detect tilt left and right, logo up and down or face up and down.
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Let's build a rock paper scissors game where you turn the micro:bit left to display paper, right to display scissors and down to display rock.
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Unshuffle and try this code on the micro:bit itself!
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```shuffle
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input.onGesture(Gesture.TiltLeft, () => {
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basic.showLeds(`
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# # # # #
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# . . . #
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# . . . #
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# . . . #
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# # # # #`);
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});
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input.onGesture(Gesture.LogoDown, () => {
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basic.showLeds(`
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. . . . .
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. # # # .
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. # # # .
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. # # # .
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. . . . .`);
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});
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input.onGesture(Gesture.TiltRight, () => {
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basic.showLeds(`
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# # . . #
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# # . # .
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. . # . .
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# # . # .
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# # . . #`);
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});
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```
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### Pins
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It is possible to use the pins (big metal bar at the bottom of the board) as button. Hold the ``GND`` button with one hand and press the ``0`` pin
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(called ``P0``) with the other hand to trigger a pin pressed.
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Unshuffle the blocks to display a smiley when pin ``P0`` is pressed.
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```shuffle
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input.onPinPressed(TouchPin.P0, () => {
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basic.showLeds(`
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. . . . .
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. # . # .
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. . . . .
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# . . . #
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. # # # .`);
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});
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```
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### Your turn now!
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Use the scree, buttons, gestures, pins to create a fun game using the micro:bit. |