Czujniki sprzedawane są w 2 wariantach w obudowie zwykłej oraz wodoodpornej.


Co będzie nam potrzebne
1.Dowolna płytka Arduino
2.Czujnik temperatury dallas DS18B20
3.Rezystor 4,7k
4.Płytka stykowa
5.Przewody połączeniowe
6.Wyświetlacz ILI9340 lub 9341
Na początek musimy pobrać z sieci 2 potrzebne biblioteki,łatwo je znaleźć w google więc nie podaję linków.
1 biblioteka to
OneWire
2 biblioteka to
DallasTemperature
Biblioteki pobieramy i rozpakowywujemy do katalogu Libraries.
Podłączenie wyświetlacza macie w poprzednim poście ,więc zajmiemy się tylko podłączeniem czujnika DS18B20 a wygląda ono tak:

Gdy mamy wszystko podłączone wgrywamy prosty kod mający za zadanie odczyt temperatury z czujnika i wyświetlanie jej co 1s na naszym wyświetlaczu.
#include <OneWire.h> #include <DallasTemperature.h> #define ONE_WIRE_BUS 2 OneWire oneWire(ONE_WIRE_BUS); DallasTemperature sensors(&oneWire); const int intTimePause = 5000; #include "SPI.h" #include "Adafruit_GFX.h" #include "Adafruit_ILI9340.h" #if defined(__SAM3X8E__) #undef __FlashStringHelper::F(string_literal) #define F(string_literal) string_literal #endif #define _sclk 13 #define _miso 12 #define _mosi 11 #define _cs 10 #define _dc 9 #define _rst 8 Adafruit_ILI9340 tft = Adafruit_ILI9340(_cs, _dc, _rst); void setup () { tft.begin(); sensors.begin(); } void loop() { sensors.requestTemperatures(); tft.fillScreen(ILI9340_BLACK); tft.setCursor(0, 0); tft.setTextColor(ILI9340_RED); tft.setTextSize(3); tft.println(""); tft.print("Temp "); tft.println(sensors.getTempCByIndex(0)); delay(1000); }
tutaj przykład termometru do akwarium z czujnikiem DS18B20 w wersji wodoszczelnej.
/*Autor: Tomasz Wasiński wasyl2007 Termometr akwariowy z alarmem */ #include "SPI.h" #include "Adafruit_GFX.h" #include "Adafruit_ILI9340.h" #include <OneWire.h> #include <DallasTemperature.h> #define ONE_WIRE_BUS 3 OneWire oneWire(ONE_WIRE_BUS); DallasTemperature sensors(&oneWire); //Podłączenie wyświetlacza ILI9340 #define _sclk 13 #define _miso 12 #define _mosi 11 #define _cs 10 #define _dc 9 #define _rst 8 Adafruit_ILI9340 tft = Adafruit_ILI9340(_cs, _dc, _rst); //bitmapa rybka prog_uchar myBit1[] PROGMEM ={ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f 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,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f }; //bitmapa termometr prog_uchar myBit2[] PROGMEM ={ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0f,0xc0,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xff,0xf8,0x0f ,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x80,0x3e,0x0f ,0x00,0x3f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1e,0x00,0x0f,0x0f ,0x00,0x7f,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x3c,0x00,0x03,0x8f ,0x00,0xe1,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x00,0x00,0xcf ,0x00,0xe1,0xc0,0x0f,0x80,0x00,0x00,0x00,0x00,0xf0,0x00,0x00,0x0f ,0x00,0x73,0x80,0x78,0x78,0x00,0x00,0x00,0x01,0xe0,0x00,0x00,0x0f ,0x00,0x3f,0x01,0xe0,0x38,0x00,0x00,0x00,0x03,0xc0,0x20,0x00,0x0f ,0x00,0x1e,0x03,0xc0,0x18,0x00,0x00,0x00,0x07,0x80,0xc0,0x00,0x0f 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sensors.requestTemperatures(); tft.fillScreen(ILI9340_BLACK); tft.setTextSize(5); tft.setTextColor(ILI9340_YELLOW); tft.setCursor(0, 120); tft.print(" "); tft.print(sensors.getTempCByIndex(0)); tft.drawBitmap(0,200,myBit1,100,100, ILI9340_GREEN); if(sensors.getTempCByIndex(0)>26) { tft.drawBitmap(30,10,myBit2,100,100, ILI9340_RED); tone(6,1000 ,1000); tft.setTextSize(2); tft.setTextColor(ILI9340_RED); tft.setCursor(90, 170); tft.print("UWAGA!"); tft.setCursor(0, 190); tft.print(" WODA ZBYT CIEPLA!"); } else { tft.drawBitmap(30,10,myBit2,100,100, ILI9340_GREEN); } if(sensors.getTempCByIndex(0)<25) { tft.drawBitmap(30,10,myBit2,100,100, ILI9340_BLUE); tone(6,1000 ,1000); tft.setTextSize(2); tft.setTextColor(ILI9340_RED); tft.setCursor(90, 170); tft.print("UWAGA!"); tft.setCursor(0, 190); tft.print(" WODA ZBYT ZIMNA!"); } delay(1000); }
Miłej zabawy jeśli macie jakieś pytania- wasyl2007233@gmail.com
how i can get color image?
OdpowiedzUsuńWhat is the software to convert image in file.c?
OdpowiedzUsuńhttp://en.radzio.dxp.pl/bitmap_converter/
UsuńColor image
Usuńhttp://www.digole.com/tools/PicturetoC_Hex_converter.php
http://en.radzio.dxp.pl/bitmap_converter/
OdpowiedzUsuńColor image
Usuńhttp://www.digole.com/tools/PicturetoC_Hex_converter.php