arduino-溫濕度感應器/圖案顯示器/顯示溫濕度

溫濕度感應器
硬體

• arduino板
• 麵包板
• 溫濕度感應器DHT11

程式

• http://ming-shian.blogspot.tw/2014/05/arduino19dht11.html

圖案顯示器

硬體

• arduino板
• 麵包板
• nokia5110顯示器
• 接腳按照程式接

程式

• 下載https://github.com/adafruit/Adafruit-GFX-Library
• 下載https://github.com/adafruit/Adafruit-PCD8544-Nokia-5110-LCD-library
• 將上面兩個檔案解壓縮放進libraries
• 從範例中開啟Adafruit-PCD8544-Nokia-5110-LCD-library的pcdtest

顯示溫濕度

硬體

• arduino板
• 麵包板
• nokia5110顯示器
• 溫濕度感應器DHT11

程式

• 參考Adafruit-PCD8544-Nokia-5110-LCD-library的pcdtest中，Hello, world!那一段
• // draw a single pixel以下全部刪除，只留Hello, world!那段
• 將溫濕度感應.h檔導入，設好接腳define
• 將print、println的值分別改成temperature =、DHT.temperature、C
• 同樣方法改濕度
• print跟println的差別在於有ln則換行
• 改好後若發現temperature比humidity多一行是因為temperature = 這串超過螢幕範圍自動跳行，刪掉=後的空格就好

程式碼-此為將溫溼度合併在同個畫面，並不將數值反白

/*********************************************************************

This is an example sketch for our Monochrome Nokia 5110 LCD Displays

  Pick one up today in the adafruit shop!

  ------> http://www.adafruit.com/products/338

These displays use SPI to communicate, 4 or 5 pins are required to

interface

Adafruit invests time and resources providing this open source code,

please support Adafruit and open-source hardware by purchasing

products from Adafruit!

Written by Limor Fried/Ladyada  for Adafruit Industries.

BSD license, check license.txt for more information

All text above, and the splash screen must be included in any redistribution

*********************************************************************/

#include <SPI.h>

#include <Adafruit_GFX.h>

#include <Adafruit_PCD8544.h>

#include <dht.h>   

// Software SPI (slower updates, more flexible pin options):

// pin 7 - Serial clock out (SCLK)

// pin 6 - Serial data out (DIN)

// pin 5 - Data/Command select (D/C)

// pin 4 - LCD chip select (CS)

// pin 3 - LCD reset (RST)

Adafruit_PCD8544 display = Adafruit_PCD8544(7, 6, 5, 4, 3);

// Hardware SPI (faster, but must use certain hardware pins):

// SCK is LCD serial clock (SCLK) - this is pin 13 on Arduino Uno

// MOSI is LCD DIN - this is pin 11 on an Arduino Uno

// pin 5 - Data/Command select (D/C)

// pin 4 - LCD chip select (CS)

// pin 3 - LCD reset (RST)

// Adafruit_PCD8544 display = Adafruit_PCD8544(5, 4, 3);

// Note with hardware SPI MISO and SS pins aren't used but will still be read

// and written to during SPI transfer.  Be careful sharing these pins!

#define NUMFLAKES 10

#define XPOS 0

#define YPOS 1

#define DELTAY 2

#define LOGO16_GLCD_HEIGHT 16

#define LOGO16_GLCD_WIDTH  16

#define dht_dpin 2 //定義訊號要從Pin A0 進來  

  

dht DHT;   

static const unsigned char PROGMEM logo16_glcd_bmp[] =

{ B00000000, B11000000,

  B00000001, B11000000,

  B00000001, B11000000,

  B00000011, B11100000,

  B11110011, B11100000,

  B11111110, B11111000,

  B01111110, B11111111,

  B00110011, B10011111,

  B00011111, B11111100,

  B00001101, B01110000,

  B00011011, B10100000,

  B00111111, B11100000,

  B00111111, B11110000,

  B01111100, B11110000,

  B01110000, B01110000,

  B00000000, B00110000 };

void setup()   {

  Serial.begin(9600);

  display.begin();

  // init done

  // you can change the contrast around to adapt the display

  // for the best viewing!

  display.setContrast(50);

  display.clearDisplay();   // clears the screen and buffer

}

void loop(){

  //show H&T

  DHT.read11(dht_dpin);

  display.setTextSize(1);

  display.setTextColor(BLACK);

  display.setCursor(0,0);

  display.println("Humidity = ");

  display.setTextColor(BLACK); 

  display.print(DHT.humidity);

  display.setTextSize(1);

  display.setTextColor(BLACK);

  display.println("%"); 

  display.display();

  display.setTextSize(1);

  display.setTextColor(BLACK);

  display.println("temperature =");

  display.setTextColor(BLACK); 

  display.print(DHT.temperature);

  display.setTextSize(1);

  display.setTextColor(BLACK);

  display.print("C"); 

  display.display();

  delay(2000);

  display.clearDisplay();   // clears the screen and buffer

}