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Lm35float tempC;
int reading;
int tempPin = 0;
void setup()
{
Serial.begin(9600);
}
void loop()
{
reading = analogRead(tempPin);
tempC = reading / 9.31;
Serial.print("TEMPRATURE = ");
Serial.print(tempC);
Serial.print("*C");
Serial.println();
delay(1000);
}
Time#include "LedControl.h"
#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 rtc;
int a,b,c,i,j,k,x,y,z;
LedControl lc=LedControl(12,11,10,1);
void setup()
{
Serial.begin(9600);
lc.shutdown(0,false);
lc.setIntensity(0,8);
lc.clearDisplay(0);
#ifdef AVR
Wire.begin();
#else
Wire1.begin(); // Shield I2C pins connect to alt I2C bus on Arduino Due
#endif
rtc.begin();
if (! rtc.isrunning()) {
// following line sets the RTC to the date & time this sketch was compiled
rtc.adjust(DateTime(__DATE__, __TIME__));
}
}
void loop ()
{
DateTime now = rtc.now();
a= now.hour();
b= now.minute();
c= now.second();
i = a / 10; j= b/10; k= c/10; x= a%10; y= b%10; z= c%10;
Serial.println(a);
Serial.println(10);
Serial.println(a/10);
lc.setDigit(0,0,i,false);
lc.setDigit(0,1,x,false);
lc.setChar(0,2,'-',false);
lc.setDigit(0,3,j,false);
lc.setDigit(0,4,y,false);
lc.setChar(0,5,'-',false);
lc.setDigit(0,6,k,false);
lc.setDigit(0,7,z,false);
delay(1000);
}
Date and time// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 rtc;
void setup () {
Serial.begin(57600);
#ifdef AVR
Wire.begin();
#else
Wire1.begin(); // Shield I2C pins connect to alt I2C bus on Arduino Due
#endif
rtc.begin();
if (! rtc.isrunning()) {
Serial.println("RTC is NOT running!");
// following line sets the RTC to the date & time this sketch was compiled
rtc.adjust(DateTime(__DATE__, __TIME__));
}
}
void loop () {
DateTime now = rtc.now();
Serial.print(now.year(), DEC);
Serial.print('/');
Serial.print(now.month(), DEC);
Serial.print('/');
Serial.print(now.day(), DEC);
Serial.print(' ');
Serial.print(now.hour(), DEC);
Serial.print(':');
Serial.print(now.minute(), DEC);
Serial.print(':');
Serial.print(now.second(), DEC);
Serial.println();
Serial.print(" since midnight 1/1/1970 = ");
Serial.print(now.unixtime());
Serial.print("s = ");
Serial.print(now.unixtime() / 86400L);
Serial.println("d");
// calculate a date which is 7 days and 30 seconds into the future
DateTime future (now.unixtime() + 7 * 86400L + 30);
Serial.print(" now + 7d + 30s: ");
Serial.print(future.year(), DEC);
Serial.print('/');
Serial.print(future.month(), DEC);
Serial.print('/');
Serial.print(future.day(), DEC);
Serial.print(' ');
Serial.print(future.hour(), DEC);
Serial.print(':');
Serial.print(future.minute(), DEC);
Serial.print(':');
Serial.print(future.second(), DEC);
Serial.println();
Serial.println();
delay(3000);
}