Have a question about Arduino? Ask me!

Jeremy, You tutorials are great, and I will be pointing to them from my site. Thanks for taking the time to help so many people!

If you get questions from real beginners, youngsters etc., maybe take a look at: http://yourduino.com 

Regards, Terry King

On The Red Sea

terry@yourduino.com.com

Jeremy,

The problem i'm having is that im using an arduino uno with a GPRS shield and with the code set up below, i get a continuos sms message on my iphone that i cant stop, also when the wires i have set up on the Gprs are unconnected i still get sms messages on my phone.

Thanks for your help

//sketch sends a text message if the waterSensor becomes submerged

#include <SoftwareSerial.h>

SoftwareSerial mySerial(7, 8); //gprs shield attached to pins 7 and 8 for software serial connection

const String phoneNumber = "+1609xxxxxxx"; //the phone number of the phone to send the text message to, remember to include the country code before the number

const int sensorPin = 2; //the water sensor is attached to pin 2

boolean flooded = false; //set the flooded variable to false

boolean messageSent = false;

void setup(){

  mySerial.begin(19200); //19200 is the GPRS baud rate, this must be fixed

  Serial.begin(19200);

  pinMode(sensorPin, INPUT);

  delay(500);

}

void loop(){ //we loop through this area

  if (digitalRead(sensorPin) == HIGH){ //if the sensorPin is high, current is being passed into it, so the sensor must be submerged

    flooded = true; //the basement is therefor flooded

  } else if (digitalRead(sensorPin) == LOW){ //otherwise if it has no current

    flooded = false; //the sensor isn't submerged

    messageSent = false; //we can reset the messageSend, so that if it becomes submerged again, we can end another text message

  }

  if ((messageSent == false) && (flooded == true)){ //if we havent yet sent a message, and the sensor is submerged

    sendTextMessage(phoneNumber, "Your basement is flooding [Arduino]"); //we send the text message

    messageSent = true; //we set messageSent to true so that we don't keep sending text messages (this woulld cost a lot of money)

  }

}

void sendTextMessage(String phone, String data){ //sends a text message to phone, containing data

mySerial.print("AT+CMGF=1\r");    //Because we want to send the SMS in text mode

delay(100);

mySerial.println("AT + CMGS = \"" + phone + "\"");//send sms message, be careful need to add a country code before the cellphone number

delay(100);

mySerial.println(data);//the content of the message

delay(100);

mySerial.println((char)26);//the ASCII code of the ctrl+z is 26

delay(100);

mySerial.println();

}

Jeremy,

The problem i'm having is that im using an arduino uno with a GPRS shield and with the code set up below, i get a continuos sms message on my iphone that i cant stop, also when the wires i have set up on the Gprs are unconnected i still get sms messages on my phone.

Thanks for your help

//sketch sends a text message if the waterSensor becomes submerged

#include <SoftwareSerial.h>

SoftwareSerial mySerial(7, 8); //gprs shield attached to pins 7 and 8 for software serial connection

const String phoneNumber = "+1609xxxxxxx"; //the phone number of the phone to send the text message to, remember to include the country code before the number

const int sensorPin = 2; //the water sensor is attached to pin 2

boolean flooded = false; //set the flooded variable to false

boolean messageSent = false;

void setup(){

  mySerial.begin(19200); //19200 is the GPRS baud rate, this must be fixed

  Serial.begin(19200);

  pinMode(sensorPin, INPUT);

  delay(500);

}

void loop(){ //we loop through this area

  if (digitalRead(sensorPin) == HIGH){ //if the sensorPin is high, current is being passed into it, so the sensor must be submerged

    flooded = true; //the basement is therefor flooded

  } else if (digitalRead(sensorPin) == LOW){ //otherwise if it has no current

    flooded = false; //the sensor isn't submerged

    messageSent = false; //we can reset the messageSend, so that if it becomes submerged again, we can end another text message

  }

  if ((messageSent == false) && (flooded == true)){ //if we havent yet sent a message, and the sensor is submerged

    sendTextMessage(phoneNumber, "Your basement is flooding [Arduino]"); //we send the text message

    messageSent = true; //we set messageSent to true so that we don't keep sending text messages (this woulld cost a lot of money)

  }

}

void sendTextMessage(String phone, String data){ //sends a text message to phone, containing data

mySerial.print("AT+CMGF=1\r");    //Because we want to send the SMS in text mode

delay(100);

mySerial.println("AT + CMGS = \"" + phone + "\"");//send sms message, be careful need to add a country code before the cellphone number

delay(100);

mySerial.println(data);//the content of the message

delay(100);

mySerial.println((char)26);//the ASCII code of the ctrl+z is 26

delay(100);

mySerial.println();

}