Use an RTC to activate a water pump with an analog setting

Using Arduino Programming Questions
1 

void loop() {
 
    // Configuracion modulo RTC
    RtcDateTime now = Rtc.GetDateTime();

    printDateTime(now);
    Serial.println();

    if (!now.IsValid()) {
      // Common Causes:
      //    1) the battery on the device is low or even missing and the power line was disconnected
      Serial.println("RTC lost confidence in the DateTime!");
    }
    
 delay (1000);
 
  // Fin modulo RTC

  // configuracion por tiempos

    segundos = now.Second();
    minutos = now.Minute();
    hora = now.Hour();

/*
if((hora%2 == 0)and minutos == 0 and segundos == 0){
  if(hora <=0 and hora > 4){
  activarMotor();  
  }
}
*/

if (hora == 1 and minutos == 37  and segundos == 0 ){
  activarMotor();
}
  
  //configuracion potenciometro

  int ajusteAnalogo = analogRead(potenciometro);

  if (ajusteAnalogo >= 0 and ajusteAnalogo <= 170) {
    tiempoMotor = 5000;
    Serial.println("El agua circulara durante 5 minutos");
  }  if (ajusteAnalogo >= 171 and ajusteAnalogo <= 341) {
    tiempoMotor = 600000;
    Serial.println("El agua circulara durante 10 minutos");
  }  if (ajusteAnalogo >= 342 and ajusteAnalogo <= 512) {
    tiempoMotor = 900000;
    Serial.println("El agua circulara durante 15 minutos");
  }  if (ajusteAnalogo >= 513 and ajusteAnalogo <= 683 ) {
    tiempoMotor = 1200000;
    Serial.println("El agua circulara durante 20 minutos");
  }  if (ajusteAnalogo >= 684 and ajusteAnalogo <= 854) {
    tiempoMotor = 1500000;
    Serial.println("El agua circulara durante 25 minutos");
  }  if (ajusteAnalogo >= 855 and ajusteAnalogo <= 1025) {
    tiempoMotor = 1800000;
    Serial.println("El agua circulara durante 30 minutos");
  }
  // conversionde milisegundos a minutos
  int convertMinutos = tiempoMotor / 60000;

  // Configuracion Boton
 /* 
  if(digitalRead(boton) == LOW){
    Serial.println("El boton esta siendo pulsado");
    activarMotor();
    delay(tiempoMotor);
    digitalWrite(motor, LOW);   
  }else{
    digitalRead(boton) == HIGH;
    delay(10000);
  }
 */
}

void activarMotor() {
  for (uint8_t i = 0; i < 100; i++) {// arranque suave
    analogWrite(motor, i); // pwm de 0-255
  }
  analogWrite(motor, 100); // pwm de 0-255
  Serial.println("Motor Activo");
  delay(tiempoMotor);
  digitalWrite(motor, LOW);
}

void printDateTime(const RtcDateTime& dt)
{
  char datestring[20];

  snprintf_P(datestring,
             countof(datestring),
             PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
             dt.Month(),
             dt.Day(),
             dt.Year(),
             dt.Hour(),
             dt.Minute(),
             dt.Second() );
  Serial.print(datestring);
}

When activarMotor start and engine the water pump the RTC forgot the date and the time. this just reset

imagen
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2

Don't post snippets (Snippets R Us!)

3 
include <ThreeWire.h>
#include <RtcDS1302.h>

#define countof(a)(sizeof(a) / sizeof(a[0]))
#define time1 5000
#define motor 3
#define potenciometro A0


//A0 --> Analogo giro
//8,7,6 --> RTC
//3 --> Transistor
//2 --> Boton

int hora;
int minutos;
int segundos;
unsigned long tiempoMotor;


ThreeWire myWire(7, 6, 8); // IO, SCLK, CE
                           // CLK, DAT, RST
RtcDS1302<ThreeWire> Rtc(myWire);

void setup() {
  
  //Water pump
  pinMode(motor, OUTPUT);
  digitalWrite(motor, LOW);
  
  // Module RTC
  Serial.begin(57600);

  Serial.print("compiled: ");
  Serial.print(__DATE__);
  Serial.println(__TIME__);

  Rtc.Begin();

  RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
  printDateTime(compiled);
  Serial.println();

   if (!Rtc.IsDateTimeValid()) 
    {
        // Common Causes:
        //    1) first time you ran and the device wasn't running yet
        //    2) the battery on the device is low or even missing

        Serial.println("RTC lost confidence in the DateTime!");
        Rtc.SetDateTime(compiled);
    }

    if (Rtc.GetIsWriteProtected())
    {
        Serial.println("RTC was write protected, enabling writing now");
        Rtc.SetIsWriteProtected(false);
    }

    if (!Rtc.GetIsRunning())
    {
        Serial.println("RTC was not actively running, starting now");
        Rtc.SetIsRunning(true);
    }

    RtcDateTime now = Rtc.GetDateTime();
    if (now < compiled) 
    {
        Serial.println("RTC is older than compile time!  (Updating DateTime)");
        Rtc.SetDateTime(compiled);
    }
    else if (now > compiled) 
    {
        Serial.println("RTC is newer than compile time. (this is expected)");
    }
    else if (now == compiled) 
    {
        Serial.println("RTC is the same as compile time! (not expected but all is fine)");
    }
}

void loop() {
 
    // Module RTC
    RtcDateTime now = Rtc.GetDateTime();

    printDateTime(now);
    Serial.println();

    if (!now.IsValid()) {
      // Common Causes:
      //    1) the battery on the device is low or even missing and the power line was disconnected
      Serial.println("RTC lost confidence in the DateTime!");
    }
    
 delay (1000);

  // config time

    segundos = now.Second();
    minutos = now.Minute();
    hora = now.Hour();

/*
if((hora%2 == 0)and minutos == 0 and segundos == 0){
  if(hora <=0 and hora > 4){
  activarMotor();  
  }
}
*/

// this is a test
if (hora == 1 and minutos == 49 and segundos == 0 ){
  activarMotor();
}
  
  //config Analog

  int ajusteAnalogo = analogRead(potenciometro);

  if (ajusteAnalogo >= 0 and ajusteAnalogo <= 170) {
    tiempoMotor = 5000;
    Serial.println("El agua circulara durante 5 minutos");
  }  if (ajusteAnalogo >= 171 and ajusteAnalogo <= 341) {
    tiempoMotor = 600000;
    Serial.println("El agua circulara durante 10 minutos");
  }  if (ajusteAnalogo >= 342 and ajusteAnalogo <= 512) {
    tiempoMotor = 900000;
    Serial.println("El agua circulara durante 15 minutos");
  }  if (ajusteAnalogo >= 513 and ajusteAnalogo <= 683 ) {
    tiempoMotor = 1200000;
    Serial.println("El agua circulara durante 20 minutos");
  }  if (ajusteAnalogo >= 684 and ajusteAnalogo <= 854) {
    tiempoMotor = 1500000;
    Serial.println("El agua circulara durante 25 minutos");
  }  if (ajusteAnalogo >= 855 and ajusteAnalogo <= 1025) {
    tiempoMotor = 1800000;
    Serial.println("El agua circulara durante 30 minutos");
  }
  
}

void activarMotor() {
  for (uint8_t i = 0; i < 100; i++) {// arranque suave
    analogWrite(motor, i); // pwm de 0-255
  }
  analogWrite(motor, 100); // pwm de 0-255
  Serial.println("Motor Activo");
  delay(tiempoMotor);
  digitalWrite(motor, LOW);
}

void printDateTime(const RtcDateTime& dt)
{
  char datestring[20];

  snprintf_P(datestring,
             countof(datestring),
             PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
             dt.Month(),
             dt.Day(),
             dt.Year(),
             dt.Hour(),
             dt.Minute(),
             dt.Second() );
  Serial.print(datestring);
}
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