1 | // Example testing sketch for various DHT humidity/temperature sensors
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2 | // Written by ladyada, public domain
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3 |
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4 | #include "DHT.h"
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5 | #include <RCSwitch.h>
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6 |
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7 | RCSwitch mySwitch = RCSwitch();
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8 |
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9 | #define DHTPIN 8 // what pin we're connected to
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10 |
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11 | // Uncomment whatever type you're using!
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12 | //#define DHTTYPE DHT11 // DHT 11
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13 | #define DHTTYPE DHT22 // DHT 22 (AM2302)
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14 | //#define DHTTYPE DHT21 // DHT 21 (AM2301)
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15 |
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16 | // Connect pin 1 (on the left) of the sensor to +5V
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17 | // NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
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18 | // to 3.3V instead of 5V!
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19 | // Connect pin 2 of the sensor to whatever your DHTPIN is
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20 | // Connect pin 4 (on the right) of the sensor to GROUND
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21 | // Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
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22 |
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23 | // Initialize DHT sensor for normal 16mhz Arduino
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24 | DHT dht(DHTPIN, DHTTYPE);
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25 | // NOTE: For working with a faster chip, like an Arduino Due or Teensy, you
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26 | // might need to increase the threshold for cycle counts considered a 1 or 0.
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27 | // You can do this by passing a 3rd parameter for this threshold. It's a bit
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28 | // of fiddling to find the right value, but in general the faster the CPU the
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29 | // higher the value. The default for a 16mhz AVR is a value of 6. For an
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30 | // Arduino Due that runs at 84mhz a value of 30 works.
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31 | // Example to initialize DHT sensor for Arduino Due:
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32 | //DHT dht(DHTPIN, DHTTYPE, 30);
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33 |
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34 | void setup() {
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35 | Serial.begin(9600);
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36 | Serial.println("DHTxx test!");
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37 |
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38 | dht.begin();
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39 | // Transmitter is connected to Arduino Pin #10
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40 | mySwitch.enableTransmit(10);
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41 | // Optional set pulse length.
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42 | mySwitch.setPulseLength(313);
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43 | // Optional set protocol (default is 1, will work for most outlets)
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44 | mySwitch.setProtocol(1);
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45 | // Optional set number of transmission repetitions.
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46 | // mySwitch.setRepeatTransmit(15);
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47 |
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48 | }
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49 |
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50 | void loop() {
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51 | // Wait a few seconds between measurements.
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52 | delay(2000);
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53 |
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54 | // Reading temperature or humidity takes about 250 milliseconds!
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55 | // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
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56 | float h = dht.readHumidity();
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57 | // Read temperature as Celsius
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58 | float t = dht.readTemperature();
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59 | // Read temperature as Fahrenheit
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60 | float f = dht.readTemperature(true);
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61 |
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62 | // Check if any reads failed and exit early (to try again).
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63 | if (isnan(h) || isnan(t) || isnan(f)) {
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64 | Serial.println("Failed to read from DHT sensor!");
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65 | return;
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66 | }
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67 |
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68 | // Compute heat index
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69 | // Must send in temp in Fahrenheit!
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70 | float hi = dht.computeHeatIndex(f, h);
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71 |
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72 | Serial.print("Humidity: ");
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73 | Serial.print(h);
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74 | Serial.print(" %\t");
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75 | Serial.print("Temperature: ");
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76 | Serial.print(t);
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77 | Serial.print(" *C ");
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78 | Serial.print(f);
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79 | Serial.print(" *F\t");
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80 | Serial.print("Heat index: ");
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81 | Serial.print(hi);
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82 | Serial.println(" *F");
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83 |
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84 |
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85 | mySwitch.send("000001000000010101010001 "); //einschalten
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86 | delay(1000);
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87 | mySwitch.send("000001000000010101010100 "); //ausschalten
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88 | delay(1000);
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89 | }
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