Arduino Raspberry Pi Breadboard Sensors Azure IoT Suite

1. IoT
Internet of Things
rainmaker_ho # 12515

2. Agenda
 Arduino
 Raspberry Pi
 Breadboard
 Sensors
 Azure IoT Suite
2

3. Arduino
3

4. Arduino
IDE
 setup & loop  14 數位 Pin
 6 模擬輸入
4

5. Led
如何接
 短腳接負極 GND
 長腳接正極 Vcc
PIN 11
5

6. “Arduino ~ Hello World ”
6
慢慢亮
const int led = 11;
void setup() {
pinMode(led, OUTPUT);
}
void loop() {
for(int i=0;i<178;i++){
analogWrite(led, i);
delay(100);
}
}
一閃一閃
const int led = 11;
void setup() {
pinMode(led, OUTPUT);
}
void loop() {
digitalWrite(led, HIGH);
delay(2000);
digitalWrite(led, LOW);
delay(2000);
}

7. Raspberry Pi
7

8. 硬體規格
8

9. GPIO
General
Purpose
Input
Output
可用軟體控制的數位訊號
決定輸入/輸出
9

10. 可安裝的
作業系統
10

11. Raspbian
OS
11

12. Windows 10
IoT Core
12

13. Led
如何接
▸短腳接負極 GND
▸長腳接正極 Vcc
GPIO 4
13

14. 利用
麵包板
14

15. 麵包板
說明
15

16. “RPi ~ Hello World ”
16
設定LED 亮/熄
var gpio = GpioController.GetDefault();
if (gpio != null)
{
_gpLED4 = gpio.OpenPin(LED_GPIO_4);
_gpLED4.Write(GpioPinValue.Low);
_gpLED4.SetDriveMode(GpioPinDriveMode.Output);
}
//設定
_gpLED4.Write(GpioPinValue.Low);
//or
_gpLED4.Write(GpioPinValue.High);

17. “RPi ~ Hello World 2 ”
17
Button 設定LED 亮/熄
_gpButtonRed27 = gpio.OpenPin(BUTTON_RED_GPIO_27);
_gpButtonRed27.SetDriveMode(GpioPinDriveMode.InputPullUp);
_gpButtonRed27.DebounceTimeout = TimeSpan.FromMilliseconds(50);
_gpButtonRed27.ValueChanged += _gpButtonRed27_ValueChanged;
private void _gpButtonRed27_ValueChanged(...)
{
if (e.Edge == GpioPinEdge.FallingEdge)
{
SetLED4(GpioPinValue.High);
}
else
{
SetLED4(GpioPinValue.Low);
}
}

18. Button
說明
18
_gpButtonRed27.SetDriveMode(
GpioPinDriveMode.InputPullUp);
_gpButtonRed27.DebounceTimeout =
TimeSpan.FromMilliseconds(50);

19. “RPi ~ Hello World 3 ”
19
設定LED 紅、黃、綠 輪流亮/熄
_gpLED_YELLOW20.Write(GpioPinValue.Low);
_gpLED_GREEN16.Write(GpioPinValue.Low);
_gpLED_RED21.Write(GpioPinValue.High);
await Task.Delay(TimeSpan.FromSeconds(1.5));
_gpLED_YELLOW20.Write(GpioPinValue.High);
_gpLED_GREEN16.Write(GpioPinValue.Low);
_gpLED_RED21.Write(GpioPinValue.Low);
await Task.Delay(TimeSpan.FromSeconds(1));
_gpLED_YELLOW20.Write(GpioPinValue.Low);
_gpLED_GREEN16.Write(GpioPinValue.High);
_gpLED_RED21.Write(GpioPinValue.Low);
await Task.Delay(TimeSpan.FromSeconds(0.5));
電阻

20. 電阻
計算
 LED規格
 Pi 給 3.3 V
 電阻 R = 電壓 V / 電流 I
R = (3.3-1.85)/0.02
= 72.5 Ω
最小要接 72.5 歐姆的電阻 , 才能避免 LED 燒毀
20

21. 電阻值
計算
21

22. DHT 22
讀溫/溼度Sensor
22

23. Data Pin 接到
GPIO 17
23

24. 如何讀取資料?
DHT 22
Datasheet
24

25. 如何讀取資料?
用別人的
Library
25

26. “DHT ~ Hello World ”
26
讀取 DHT22 的溫溼度資料
var gpio = GpioController.GetDefault();
if (gpio != null)
{
_gpDHT = gpio.OpenPin(17, GpioSharingMode.Exclusive);
_gpDHT.SetDriveMode(GpioPinDriveMode.Input);
}
//每一隔一段時間就讀取溫溼度資料
_dhtReading = await _dht.GetReadingAsync().AsTask();
if (_dhtReading.IsValid)
{
var temperature = _dhtReading.Temperature;
var humidity = _dhtReading.Humidity;
ShowLog($"{temperature:0.0} °C, {humidity:0.0} %");
}

27. Azure
IoT Suite
27

28. “Azure IoT~ Hello World ”
28
讀取 DHT22 的溫溼度資料、送到 Azure IoT Suite

29. Azure
IoT
Suite
29
數百萬個 IoT 裝置
來建立雙向通訊
即時串流處理

30. “Azure ~ 遠端控制 ”
30
由網頁送 命令 給 Device

31. “We can do more …”
31

32. Beacon
主題：使用 Beacon 來實現自動簽到/簽退
@ 2016/7/26 17:00 ~ 18:00
33

33. 34
THANKS!
Any questions?
You can find me at
 rainmaker_ho@gss.com.tw
 (02)25867890 # 12515
 Blog:亂馬客

34. 參考資料
 Raspberry Pi 遊戲機工作坊
 EQL
 Azure IoT Suite
 hackster.io
 OWASP Internet of Things
Project
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