🌟 液晶温湿度计兼时钟：DIY你的专属气象站！

本项目目标：DHT11，ds1307，5110液晶综合运用来做一个带温度，湿度的时钟，使用9V供电

本项目使用到的模块：
Arduino uno主控*1（包括USB线）
Nokia 5110 LCD液晶模组*1
DHT11温度传感器*1
DS1307时钟RTC模块*1
杜邦线*大量
木板雕刻件（参考附件图纸）
螺丝M3*10及螺母*30组（容易掉多备点）
9V电池及接插件

本项目使用到的工具：
万用表（有了比较方便）
螺丝刀适合M3螺丝的就行
热熔胶枪（也可以用胶水之类的，主要用来固定线缆保证可靠性）

本项目使用到的软件及库文件：
Arduino IDE1.05R2
用到的库DHT11，DS1307
机械方面需要用到Solidworks，autocad
库文件 DHT11及RTClib

/*
Author：simon
Date：2016Feb28
IDE Version：1.0.5R2
Mission:液晶温湿度计兼时钟-DHT11，ds1307，5110液晶综合运用
*/
 
#include <dht11.h>
#include <string.h>
#include <stdio.h>
#include <Wire.h>
#include <RTClib.h>
 
void printDateTime(DateTime dateTime);
 
//创建实例
RTC_DS1307 RTC;
//RTC时钟DS1307模块====SCL连主控板A5
//RTC时钟DS1307模块====SDA连主控板A4
//RTC时钟DS1307模块====GND连主控板GND
//RTC时钟DS1307模块====VCC连主控板5V
 
 
/* 日期变量缓存 */
char buf[50];
char day[10];
/* 串口数据缓存 */
String comdata = "";
int numdata[7] ={0}, j = 0, mark = 0;
 
dht11 DHT11;
 
#define DHT11PIN A0 ///温度传感器连接到A0
//端口定义
 
///液晶模块 VCC连到5V
///液晶模块 GND连到GND
///液晶模块 BLK连到5V背光LED
int LCD_CE=3;   //液晶模块 CE连到3
int LCD_RST=2;//液晶模块 RST连到2
int SCLK=7;//液晶模块 CLK连到7
int SDIN=6;//液晶模块 Din连到6
int LCD_DC=5;//液晶模块 DC连到5
 
double Fahrenheit(double celsius) 
{
return 1.8 * celsius + 32;
} //摄氏温度度转化为华氏温度
 
double Kelvin(double celsius)
{
return celsius + 273.15;
} //摄氏温度转化为开氏温度
 
// 露点（点在此温度时，空气饱和并产生露珠）
// 参考: http://wahiduddin.net/calc/density_algorithms.htm 
double dewPoint(double celsius, double humidity)
{
double A0= 373.15/(273.15 + celsius);
double SUM = -7.90298 * (A0-1);
SUM += 5.02808 * log10(A0);
SUM += -1.3816e-7 * (pow(10, (11.344*(1-1/A0)))-1) ;
SUM += 8.1328e-3 * (pow(10,(-3.49149*(A0-1)))-1) ;
SUM += log10(1013.246);
double VP = pow(10, SUM-3) * humidity;
double T = log(VP/0.61078); // temp var
return (241.88 * T) / (17.558-T);
}
 
// 快速计算露点，速度是5倍dewPoint()
// 参考: http://en.wikipedia.org/wiki/Dew_point
double dewPointFast(double celsius, double humidity)
{
double a = 17.271;
double b = 237.7;
double temp = (a * celsius) / (b + celsius) + log(humidity/100);
double Td = (b * temp) / (a - temp);
return Td;
}
 
//****************************定义ASCII字符**********************//
 
/********************************** 
6 x 8 font 
1 pixel space at left and bottom 
index = ASCII - 32 
***********************************/ 
const unsigned char font6x8[][6] = 
{ 
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp 
{ 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00 }, // ! 
{ 0x00, 0x00, 0x07, 0x00, 0x07, 0x00 }, // " 
{ 0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // # 
{ 0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $ 
{ 0x00, 0x62, 0x64, 0x08, 0x13, 0x23 }, // % 
{ 0x00, 0x36, 0x49, 0x55, 0x22, 0x50 }, // & 
{ 0x00, 0x00, 0x05, 0x03, 0x00, 0x00 }, // ' 
{ 0x00, 0x00, 0x1c, 0x22, 0x41, 0x00 }, // ( 
{ 0x00, 0x00, 0x41, 0x22, 0x1c, 0x00 }, // ) 
{ 0x00, 0x14, 0x08, 0x3E, 0x08, 0x14 }, // * 
{ 0x00, 0x08, 0x08, 0x3E, 0x08, 0x08 }, // + 
{ 0x00, 0x00, 0x00, 0xA0, 0x60, 0x00 }, // , 
{ 0x00, 0x08, 0x08, 0x08, 0x08, 0x08 }, // - 
{ 0x00, 0x00, 0x60, 0x60, 0x00, 0x00 }, // . 
{ 0x00, 0x20, 0x10, 0x08, 0x04, 0x02 }, // / 
{ 0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0 
{ 0x00, 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1 
{ 0x00, 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2 
{ 0x00, 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3 
{ 0x00, 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4 
{ 0x00, 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5 
{ 0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6 
{ 0x00, 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7 
{ 0x00, 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8 
{ 0x00, 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9 
{ 0x00, 0x00, 0x36, 0x36, 0x00, 0x00 }, // : 
{ 0x00, 0x00, 0x56, 0x36, 0x00, 0x00 }, // ; 
{ 0x00, 0x08, 0x14, 0x22, 0x41, 0x00 }, // < 
{ 0x00, 0x14, 0x14, 0x14, 0x14, 0x14 }, // = 
{ 0x00, 0x00, 0x41, 0x22, 0x14, 0x08 }, // > 
{ 0x00, 0x02, 0x01, 0x51, 0x09, 0x06 }, // ? 
{ 0x00, 0x32, 0x49, 0x59, 0x51, 0x3E }, // @ 
{ 0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C }, // A 
{ 0x00, 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B 
{ 0x00, 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C 
{ 0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D 
{ 0x00, 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E 
{ 0x00, 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F 
{ 0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G 
{ 0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H 
{ 0x00, 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I 
{ 0x00, 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J 
{ 0x00, 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K 
{ 0x00, 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L 
{ 0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M 
{ 0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N 
{ 0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O 
{ 0x00, 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P 
{ 0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q 
{ 0x00, 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R 
{ 0x00, 0x46, 0x49, 0x49, 0x49, 0x31 }, // S 
{ 0x00, 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T 
{ 0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U 
{ 0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V 
{ 0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W 
{ 0x00, 0x63, 0x14, 0x08, 0x14, 0x63 }, // X 
{ 0x00, 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y 
{ 0x00, 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z 
{ 0x00, 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [ 
{ 0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // 55 
{ 0x00, 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ] 
{ 0x00, 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^ 
{ 0x00, 0x40, 0x40, 0x40, 0x40, 0x40 }, // _ 
{ 0x00, 0x00, 0x01, 0x02, 0x04, 0x00 }, // ' 
{ 0x00, 0x20, 0x54, 0x54, 0x54, 0x78 }, // a 
{ 0x00, 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b 
{ 0x00, 0x38, 0x44, 0x44, 0x44, 0x20 }, // c 
{ 0x00, 0x38, 0x44, 0x44, 0x48, 0x7F }, // d 
{ 0x00, 0x38, 0x54, 0x54, 0x54, 0x18 }, // e 
{ 0x00, 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f 
{ 0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C }, // g 
{ 0x00, 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h 
{ 0x00, 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i 
{ 0x00, 0x40, 0x80, 0x84, 0x7D, 0x00 }, // j 
{ 0x00, 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k 
{ 0x00, 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l 
{ 0x00, 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m 
{ 0x00, 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n 
{ 0x00, 0x38, 0x44, 0x44, 0x44, 0x38 }, // o 
{ 0x00, 0xFC, 0x24, 0x24, 0x24, 0x18 }, // p 
{ 0x00, 0x18, 0x24, 0x24, 0x18, 0xFC }, // q 
{ 0x00, 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r 
{ 0x00, 0x48, 0x54, 0x54, 0x54, 0x20 }, // s 
{ 0x00, 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t 
{ 0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u 
{ 0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v 
{ 0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w 
{ 0x00, 0x44, 0x28, 0x10, 0x28, 0x44 }, // x 
{ 0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C }, // y 
{ 0x00, 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z 
{ 0x14, 0x14, 0x14, 0x14, 0x14, 0x14 } // horiz lines 
};
 
 
 
 
 
 
/************************LCD初始化函数********************************/ 
void LCD_init(void) 
{ 
//先设置为输出 
pinMode(SCLK,OUTPUT); 
pinMode(SDIN,OUTPUT);
pinMode(LCD_DC,OUTPUT); 
pinMode(LCD_CE,OUTPUT);
pinMode(LCD_RST,OUTPUT);
 
// 产生一个让LCD复位的低电平脉冲 
digitalWrite( LCD_RST, LOW); 
 
delayMicroseconds(1);
digitalWrite( LCD_RST, HIGH); 
 
// 关闭LCD 
digitalWrite( LCD_CE, LOW); 
delayMicroseconds(1);
 
// 使能LCD 
digitalWrite( LCD_CE, HIGH); //LCD_CE = 1; 
delayMicroseconds(1); 
LCD_write_byte(0x21, 0); // 使用扩展命令设置LCD模式 
LCD_write_byte(0xb8, 0); // 设置偏置电压 
LCD_write_byte(0x06, 0); // 温度校正 
LCD_write_byte(0x13, 0); // 1:48 
LCD_write_byte(0x20, 0); // 使用基本命令 
LCD_clear(); // 清屏 
LCD_write_byte(0x0c, 0); // 设定显示模式，正常显示 
 
// 关闭LCD 
digitalWrite( LCD_CE, LOW); //LCD_CE = 0; 
} 
/************************LCD清屏函数*************Robocat.com.cn******************/ 
void LCD_clear(void) 
{ 
unsigned int i; 
LCD_write_byte(0x0c, 0); 
LCD_write_byte(0x80, 0); 
for (i=0; i<504; i++) 
{ 
LCD_write_byte(0, 1); 
} 
} 
/*************************设置字符位置函数**************************/
void LCD_set_XY(unsigned char X, unsigned char Y) 
{ 
LCD_write_byte(0x40 | Y, 0);// column 
LCD_write_byte(0x80 | X, 0);// row 
} 
/*************************ASCII字符显示函数*************************/ 
void LCD_write_char(unsigned char c) 
{ 
unsigned char line; 
c -= 32; 
for (line=0; line<6; line++) 
{ 
LCD_write_byte(font6x8[c][line], 1); 
} 
} 
/*******************************************************************/ 
/*------------------------------------------------- 
LCD_write_english_String : 英文字符串显示函数 
输入参数：*s ：英文字符串指针； 
X、Y : 显示字符串的位置,x 0-83 ,y 0-5 
--------------------------------------------------*/ 
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s) 
{ 
LCD_set_XY(X,Y); 
while (*s) 
{ 
LCD_write_char(*s); 
s++; 
} 
} 
/******************************************************************/ 
/*--------------------------------------------- 
LCD_write_byte : 写数据到LCD 
输入参数：data ：写入的数据； 
command ：写数据/命令选择； 
---------------------------------------------*/ 
void LCD_write_byte(unsigned char dat, unsigned char command) 
{ 
unsigned char i; 
digitalWrite( LCD_CE, LOW); // 使能LCD_CE = 0 
if (command == 0) 
{ 
digitalWrite( LCD_DC, LOW);// 传送命令 LCD_DC = 0; 
} 
else 
{ 
digitalWrite( LCD_DC, HIGH);// 传送数据LCD_DC = 1; 
} 
 
for(i=0;i<8;i++) 
{ 
if(dat&0x80) 
{ 
digitalWrite( SDIN, HIGH);//SDIN = 1; 
} 
else 
{ 
digitalWrite( SDIN, LOW);//SDIN = 0; 
} 
digitalWrite( SCLK, LOW);//SCLK = 0; 
dat = dat << 1; 
digitalWrite( SCLK, HIGH);//SCLK = 1; 
} 
digitalWrite( LCD_CE, HIGH);//LCD_CE = 1; 
 
} 
/******************************************************************/ 
 
 
 
void setup()
{
delay(10);
Serial.begin(9600);
LCD_init();//初始化液晶 
LCD_clear(); 
delay(10) ;
//初始化总线
Wire.begin();
//初始化实时时钟
RTC.begin(); 
 
 
}
void loop()
{
DateTime now = RTC.now();
 
char str1[10]="",str2[10];
 
String str=String(DHT11.temperature);
str1[0]=str[0];str1[1]=str[1];str1[2]=str[2];str1[3]=str[3];str1[4]=str[4];str1[5]=str[5];str1[6]=str[6];str1[7]=str[7];
//strcpy(str1,str2);
LCD_write_english_string(0,0,"Temp(oC): ") ;
int chk = DHT11.read(DHT11PIN);
LCD_write_english_string(72,0,str1) ;
 
 
str=String(DHT11.humidity);
str1[0]=str[0];str1[1]=str[1];str1[2]=str[2];str1[3]=str[3];str1[4]=str[4];str1[5]=str[5];str1[6]=str[6];str1[7]=str[7];
//strcpy(str1,str2);
LCD_write_english_string(0,2,"Humid ity:") ;
chk = DHT11.read(DHT11PIN);
LCD_write_english_string(72,2,str1) ;
LCD_write_english_string(0,3,"Robocat") ;
 
//rtc
 
LCD_write_english_string(0,4,"T:") ;
String str_second="";
if (now.second()<10)
{
str_second="0";
}
 
String str_minute="";
if (now.minute()<10)
{
str_minute="0";
}
 
String str_hour="";
if (now.hour()<10)
{
str_hour="0";
}
 
 
 
 
str=str_hour+String(now.hour()) +":"+str_hour+String(now.minute())+":"+str_second+String(now.second());
str1[0]=str[0];str1[1]=str[1];str1[2]=str[2];str1[3]=str[3];str1[4]=str[4];str1[5]=str[5];str1[6]=str[6];str1[7]=str[7];
LCD_write_english_string(20,4,str1) ;
LCD_write_english_string(0,5,"D:") ;
 
 
 
str=String(now.year()) +"-"+String(now.month())+"-"+String(now.day());
str1[0]=str[0];str1[1]=str[1];str1[2]=str[2];str1[3]=str[3];str1[4]=str[4];str1[5]=str[5];str1[6]=str[6];str1[7]=str[7];
str=String(" ");
LCD_write_english_string(18,5,str1) ;
LCD_write_english_string(18,5,str1) ;
 
 
 
 
//Serial.print("Read sensor: ");
switch (chk)
{
case DHTLIB_OK: 
Serial.println("OK"); 
break;
case DHTLIB_ERROR_CHECKSUM: 
Serial.println("Checksum error"); 
break;
case DHTLIB_ERROR_TIMEOUT: 
Serial.println("Time out error"); 
break;
default: 
Serial.println("Unknown error"); 
break;
}
 
Serial.print("Hour;");
Serial.println(now.hour());
 
 
 
 
 
delay(200) ;
}
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