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Species counter

初学者 | MakeCode, Python | LED显示器, 按钮 | 动物, 变量 , 数字 & 位置值 , 植物, 生态系统

第 1 步:制作

它是什么?

Use your BBC micro:bit to help you count two different species of plants or animals in your school playground, garden or local park. You will learn about variables, and using the micro:bit's buttons and LED display.

这两个视频向你展示了你将制作什么以及如何编程

工作原理

  • The program uses variables called “A” and “B” to store the number of animals or plants counted.
  • Variables store numbers or values that can change in a computer program.
  • At the beginning of the program, “A” and “B” are set to zero and zero is shown on the LED display. You should always give variables an initial value in a computer program like this.
  • Press button A each time you see a particular animal or plant, for example, a duck, and each time one will be added to “A”.
  • Press button B each time you see another plant or animal of interest, for example, a goose, and each time one will be added to “B”.
  • Shake your micro:bit to show the totals on the LED display.

所需材料

  • micro:bit或者是MakeCode模拟器
  • MakeCode编辑器
  • 电池组(推荐,可选)
  • our set-up guide may be useful

第 2 步:编程

第3步:完善

  • Find a way of resetting the counter, for example, by pressing buttons A and B together.
  • Make a graphical representation of the number of animals or plants counted, for example, by using dots.
  • Show icons representing the animals or plants, or play sound effects, when you have reached a target number.