EV3 Python 程式範例

用 Python 撰寫程式控制 EV3 

EV3 主機的狀態燈

Code

#!/usr/bin/env pybricks-micropython
from pybricks.hubs import EV3Brick
from pybricks.tools import wait
from pybricks.parameters import Color
# Initialize the EV3
ev3 = EV3Brick()
# Turn on a red light
ev3.light.on(Color.RED)
# Wait
wait(1000)
# Turn the light off
ev3.light.off()

以下是其他 EV3 Python 範例程式

首先是聲音 EV3 Speaker

1. #!/usr/bin/env pybricks-micropython
3. from pybricks.hubs import EV3Brick
4. from pybricks.tools import wait
5. from pybricks.media.ev3dev import SoundFile
8. # Initialize the EV3
9. ev3 = EV3Brick()
12. # BEEP ########################################################################
14. # Simple beep
15. ev3.speaker.beep()
17. wait(1000)
19. # Interesting beeps
20. for f in range(100, 500, 100):
21. ev3.speaker.beep(f)
23. wait(1000)
26. # PLAY NOTES ##################################################################
28. # Twinkle, Twinkle Little Star
29. A = [
30. "C4/4",
31. "C4/4",
32. "G4/4",
33. "G4/4",
34. "A4/4",
35. "A4/4",
36. "G4/2",
37. "F4/4",
38. "F4/4",
39. "E4/4",
40. "E4/4",
41. "D4/4",
42. "D4/4",
43. "C4/2",
44. ]
45. B = ["G4/4", "G4/4", "F4/4", "F4/4", "E4/4", "E4/4", "D4/2"] * 2
46. TWINKLE = A + B + A
48. ev3.speaker.play_notes(TWINKLE)
50. wait(1000)
53. # PLAY FILE #############################################
55. ev3.speaker.play_file(SoundFile.HELLO)
57. wait(1000)
60. # TEXT TO SPEECH #######################################
62. # Say something in English
63. ev3.speaker.say("I am am E V 3. Pleased to meet you.")
65. # Say something in Danish + female
66. ev3.speaker.set_speech_options(voice="da+f5")
67. ev3.speaker.say("Leg godt!")
68. 
    
69. wait(1000)

接著是文字顯示，中文字

Code

#!/usr/bin/env pybricks-micropython
from pybricks.hubs import EV3Brick
from pybricks.tools import wait
from pybricks.media.ev3dev import Font
# It takes some time for fonts to load from file, so it is best to only
# load them once at the beginning of the program like this:
tiny_font = Font(size=6)
big_font = Font(size=24, bold=True)
chinese_font = Font(size=24, lang="zh-cn")
# Initialize the EV3
ev3 = EV3Brick()
# Say hello
ev3.screen.print("Hello!")
# Say tiny hello
ev3.screen.set_font(tiny_font)
ev3.screen.print("hello")
# Say big hello
ev3.screen.set_font(big_font)
ev3.screen.print("HELLO")
# Say Chinese hello
ev3.screen.set_font(chinese_font)
ev3.screen.print("你好")
# Wait some time to look at the screen
wait(5000)

還有圖片顯示

Code

#!/usr/bin/env pybricks-micropython
from pybricks.hubs import EV3Brick
from pybricks.tools import wait
from pybricks.media.ev3dev import Image, ImageFile
# It takes some time to load images from the SD card, so it is best to load
# them once at the beginning of a program like this:
ev3_img = Image(ImageFile.EV3_ICON)
# Initialize the EV3
ev3 = EV3Brick()
# Show an image
ev3.screen.load_image(ev3_img)
# Wait some time to look at the image
wait(5000)

Draw畫圖功能

Code

#!/usr/bin/env pybricks-micropython
from pybricks.hubs import EV3Brick
from pybricks.tools import wait
# Initialize the EV3
ev3 = EV3Brick()
# Draw a rectangle
ev3.screen.draw_box(10, 10, 40, 40)
# Draw a solid rectangle
ev3.screen.draw_box(20, 20, 30, 30, fill=True)
# Draw a rectangle with rounded corners
ev3.screen.draw_box(50, 10, 80, 40, 5)
# Draw a circle
ev3.screen.draw_circle(25, 75, 20)
# Draw a triangle using lines
x1, y1 = 65, 55
x2, y2 = 50, 95
x3, y3 = 80, 95
ev3.screen.draw_line(x1, y1, x2, y2)
ev3.screen.draw_line(x2, y2, x3, y3)
ev3.screen.draw_line(x3, y3, x1, y1)
# Wait some time to look at the shapes
wait(5000)

其他

延伸閱讀：

https://pybricks.com/ev3-micropython/hubs.html

https://docs.pybricks.com/en/v3.0/hubs/ev3brick.html