第 1 步：制作
它是什么？
Use count-controlled loops and a sequence to help create a dance routine project on your BBC micro:bit. You can use the project alone or with friends.
这两个视频介绍了你将制作什么以及如何编程：
工作原理
- The program starts when you press button A.
- Arrows appear on the micro:bit’s LED display, which tell you how to dance – step left then right, put your hands up in the air, then point down to the floor.
- If you are using the project in a group, everyone should press button A on their micro:bits at the same time, so that you start the dance routine at the same time and remain in sync.
- After showing each image, the program pauses for a second (1000 milliseconds) before showing the next image. The pause helps everyone to keep in time.
- The sequence of dance moves repeats four times then stops. The sequence is kept going using a count-controlled loop. Count-controlled loops repeat instructions a set number of times.
- Using loops to keep things happening is an important idea in computer programming. This is also called iteration.
- When the routine is finished, the micro:bit’s LED display is cleared.
所需材料
- micro:bit或者是MakeCode模拟器
- MakeCode编辑器
- 电池盒(推荐)
- LED planning sheet (optional)
第 2 步：编程
1# Imports go at the top
2from microbit import *
3
4
5while True:
6 if button_a.is_pressed():
7 for i in range(4):
8 display.show(Image('00900:'
9 '09000:'
10 '99999:'
11 '09000:'
12 '00900'))
13 sleep(1000)
14 display.show(Image('00900:'
15 '00090:'
16 '99999:'
17 '00090:'
18 '00900'))
19 sleep(1000)
20 display.show(Image('00900:'
21 '09990:'
22 '90909:'
23 '00900:'
24 '00900'))
25 sleep(1000)
26 display.show(Image('00900:'
27 '00900:'
28 '90909:'
29 '09990:'
30 '00900'))
31 sleep(1000)
32 display.clear()
33第3步：完善
- Make instructions for other dance sequences to appear when you use other inputs such as pressing button B or shaking the micro:bit.
- Change the length of the pauses to make the program run in time with your favourite song.
- Use this project alongside the step counter project to monitor how well you dance.
