Here's the problem with the project, I tried to open the arduino for 24hrs (without the solar panel) using solar charge controller and 12V7.2a lead acid battery to see how long does the battery will last.
But after 10-12 hours the battery drained. So to save the life of the battery, I want the arduino to auto sleep or turn off if the sensor is not using for 10minutes or more, and auto turn on when the sensor is triggered.
How can i do that in the code? Using below code
#include <Wire.h>
#include <TimeLib.h>
#include <DS1307RTC.h>
int X;
int Y;
int t = 0;
int i = 0;
int check = 1;
int chk = 0;
int P = A3;
int N = A2;
int tim = 0;
float Time = 0;
float frequency = 0;
float waterFlow = 0;
float total = 0;
float LS = 0;
float average = 0;
const int input = A0;
const int test = 9;
void setup()
{
Serial.begin(9600);
pinMode(input, INPUT);
pinMode(P, OUTPUT);
pinMode(N, OUTPUT);
digitalWrite(P, HIGH);
digitalWrite(N, LOW);
for (i = 0; i < sec; i++)
{
delay(1000);
}
Serial.println("AT+CNMI=2,2,0,0,0");
delay(1000);
Serial.println("AT+CMGF=1");
delay(500);
Serial.println("AT+CMGS=\"+91xxxxxxxxxx\"\r"); // Replace x with mobile number
delay(1000);
Serial.println("Your water supply notification system is ready.");// The SMS text you want to send
delay(100);
Serial.println((char)26); // ASCII code of CTRL+Z
delay(1000);
}
void loop()
{
tmElements_t tm;
if (RTC.read(tm))
{
if (tm.Hour > 12) //24Hrs to 12 Hrs conversion//
{
if (tm.Hour == 13) tim = 1;
if (tm.Hour == 14) tim = 2;
if (tm.Hour == 15) tim = 3;
if (tm.Hour == 16) tim = 4;
if (tm.Hour == 17) tim = 5;
if (tm.Hour == 18) tim = 6;
if (tm.Hour == 19) tim = 7;
if (tm.Hour == 20) tim = 8;
if (tm.Hour == 21) tim = 9;
if (tm.Hour == 22) tim = 10;
if (tm.Hour == 23) tim = 11;
}
else
{
tim = tm.Hour;
}
X = pulseIn(input, HIGH);
Y = pulseIn(input, LOW);
Time = X + Y;
frequency = 1000000 / Time;
waterFlow = frequency / 7.5;
LS = waterFlow / 60;
if (frequency >= 0)
{
if (isinf(frequency))
{
if (chk == 1)
{
Serial.println("AT+CNMI=2,2,0,0,0");
delay(1000);
Serial.println("AT+CMGF=1");
delay(500);
Serial.println("AT+CMGS=\"+91xxxxxxxxxx\"\r"); // Replace x with mobile number
delay(1000);
Serial.print("Time: ");
delay(10);
Serial.print(tim);
delay(10);
Serial.print(":");
delay(10);
Serial.print(tm.Minute);
delay(10);
if (tm.Hour >= 12)
{
Serial.println(" PM");
}
if (tm.Hour < 12)
{
Serial.println(" AM");
}
delay(10);
Serial.println("Water Supply is Ended.");// The SMS text you want to send
delay(100);
Serial.print("Average Water Flow (Litre/Min): ");
delay(100);
Serial.println(average);
delay(100);
Serial.print("Total Water Delivered: ");
delay(100);
Serial.print(total);
delay(100);
Serial.println(" Litre");
delay(100);
Serial.println((char)26); // ASCII code of CTRL+Z
delay(5000);
t = 0;
total = 0;
average = 0;
chk = 0;
check = 1;
}
}
else
{
if (check == 1)
{
Serial.println("AT+CNMI=2,2,0,0,0");
delay(1000);
Serial.println("AT+CMGF=1");
delay(500);
Serial.println("AT+CMGS=\"+91xxxxxxxxxx\"\r"); // Replace x with mobile number
delay(1000);
Serial.print("Time: ");
delay(10);
Serial.print(tim);
delay(10);
Serial.print(":");
delay(10);
Serial.print(tm.Minute);
delay(10);
if (tm.Hour >= 12)
{
Serial.println(" PM");
}
if (tm.Hour < 12)
{
Serial.println(" AM");
}
delay(10);
Serial.println("The water is being supplied now.");// The SMS text you want to send
delay(100);
Serial.println((char)26); // ASCII code of CTRL+Z
delay(1000);
check = 0;
chk = 1;
}
t = t + 1;
total = total + LS;
average = total / t;
average = average * 60;
}
}
delay(1000);
}
}