Snow globe intruder alert system

Transcript

1. Snow globe intruder alert system Marwan AlSabbagh

2. 1. Assemble 2. Code 3. Teach Structure

3. 1. Assemble

4. Circuit Playground Express • CircuitPython • $25 • No soldering

   • USB drive • Adafruit

5. vs Comparison • I/O • Battery • Bootup

6. Parts Circuit Playground Express $25 Snow Globe Kit $5 AAA

   Battery Holder $3 Conductive Thread $5 Total: $38 (28.50 GBP)

7. Fill the globe Add Water Glycerin Glitter Dolly

8. Glue the dolly

9. Or else...

10. First attempt

11. Wooden base

12. Batteries

13. Wiring

14. Conductive Thread length: 1.3 m

15. Building is fun!!!

16. 2. Code

17. Coding • CircuitPython • usb drive • main.py • 2MB

    flash

18. REPL • serial console • Linux/MacOS: screen /dev/ttyACM0 115200 •

    Mu Editor(Windows, MacOS, Linux)

19. Circuit Playground API >>> from adafruit_circuitplayground.express import cpx >>> #

    speaker play tone at 800Hz for 500ms >>> cpx.play_tone(800, 0.5) >>> # set brightness for NeoPixels to 50 percent >>> cpx.pixels.brightness = 0.5 >>> # set first NeoPixel to the color red >>> cpx.pixels[0] = [255, 0, 0] >>> # set all 10 NeoPixels to the color green >>> cpx.pixels.fill([0, 255, 0]) >>> # check if slide switch is on or off >>> cpx.switch >>> True >>> # check if capacitive touch is detected on pad A2 >>> cpx.touch_A2 >>> False

20. main function from adafruit_circuitplayground.express import cpx import time TONES =

    dict(low=800, high=960) RGB = dict(black=[0, 0, 0], blue=[0, 0, 255], green=[0, 255, 0], cyan=[0, 255, 255], red=[255, 0, 0], magenta=[255, 0, 255], yellow=[255, 255, 0], white=[255, 255, 255]) CYCLE = ['cyan', 'blue', 'magenta', 'red', 'green', 'yellow'] def beep(frequency=TONES['high']): cpx.play_tone(frequency, 0.4) def main(): cpx.pixels.brightness = 1.0 beep() while True: if cpx.switch: rainbow() else: detect() main()

21. Rainbow mode

22. rainbow function from adafruit_circuitplayground.express import cpx import time TONES =

    dict(low=800, high=960) RGB = dict(black=[0, 0, 0], blue=[0, 0, 255], green=[0, 255, 0], cyan=[0, 255, 255], red=[255, 0, 0], magenta=[255, 0, 255], yellow=[255, 255, 0], white=[255, 255, 255]) CYCLE = ['cyan', 'blue', 'magenta', 'red', 'green', 'yellow'] def rainbow(): for color in CYCLE: for i in range(10): cpx.pixels[i] = RGB[color] time.sleep(0.3)

23. Intruder alert mode

24. detect and alarm function from adafruit_circuitplayground.express import cpx import time

    TONES = dict(low=800, high=960) RGB = dict(black=[0, 0, 0], blue=[0, 0, 255], green=[0, 255, 0], cyan=[0, 255, 255], red=[255, 0, 0], magenta=[255, 0, 255], yellow=[255, 255, 0], white=[255, 255, 255]) def alarm(): for i in range(3): cpx.pixels.fill(RGB['red']) beep(TONES['high']) cpx.pixels.fill(RGB['black']) beep(TONES['low']) def detect(): colors = ['green'] * 10 + ['black'] * 10 for color in colors: if cpx.touch_A2: alarm() cpx.pixels.fill(RGB[color]) time.sleep(0.05)

25. 3. Teach

26. REPL with a 6 year old • Command/Response • Math

    • Command history • Reduce Typing • Independent • learn about sound and light

27. teach API >>> from teach import cpx, beep, led >>>

    # make speaker beep >>> beep() >>> # make speaker beep at 800Hz >>> beep(800) >>> # reduce brightness to a more comfortable level >>> cpx.pixels.brightness = 0.02 >>> # set first LED to white >>> led() >>> # set second LED to red >>> led('red', 1) >>> # set 1st LED to blue with hex color code >>> led('0000ff') >>> # set 1st LED to Magenta(red on, green off, blue on) >>> led('101')

28. Sound

29. Microscope 200x Magnification Cost: 30 GBP

30. Color wheel

31. RGB >>> led('yellow') >>> led('ffff00') >>> led('110')

32. The End https://marwano.com/