Atlas Scientific ORP Sensor

Good morning,

I am trying to send the data collected from an Atlas Scientific sensor to my mobile telephone, using Arduino Uno and the Arduino GSM-Shield (Quectel M10). Unfortunately, I have been unable to send the specific data despite I can send any other message.

Any help will be appreciated to place the data as an SMS, following is the sketch I am using.

Best regards,

#include <GSM.h>

#define PINNUMBER “”// initialize the library instance

GSM gsmAccess;
GSM_SMS sms;

#define txpin 3;
#define rxpin 2;

String inputstring = “”; //a string to hold incoming data from the PC
String sensorstring = “”; //a string to hold the data from the Atlas Scientific product
boolean input_stringcomplete = false; //have we received all the data from the PC
boolean sensor_stringcomplete = false; //have we received all the data from the Atlas Scientific product

void setup()

while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only

Serial.println(“SMS Messages Sender”);

// connection state
boolean notConnected = true;

// Start GSM shield
// If your SIM has PIN, pass it as a parameter of begin() in quotes
notConnected = false;
Serial.println(“Not connected”);
Serial.println(“GSM initialized”);
char inchar = (char); //get the char we just received
inputstring += inchar; //add it to the inputString
if(inchar == ‘\r’) {input_stringcomplete = true;} //if the incoming character is a , set the flag

if (sensor_stringcomplete)
{ //if a string from the Atlas Scientific product has been received in its entirety
Serial.print(sensorstring); //use the hardware serial port to send that data to the PC
sensorstring = “”; //clear the string:
sensor_stringcomplete = false; //reset the flag used to tell if we have received a completed string from the Atlas Scientific product

while (Serial.available()) //while a char is holding in the serial buffer
char inchar = (char); //get the new char
sensorstring += inchar; //add it to the sensorString
if (inchar == ‘\r’) {sensor_stringcomplete = true;} //if the incoming character is a , set the flag

void loop()

// sms text
Serial.print("Now, enter SMS content: ");

// send the message
while (1>0);

At a guess I would think sms.print does not accept messages from the String class. Try converting it to a NULL terminated char array.

Looking deeper into your code and none of it really makes any sense. If you use the SendSMS example included with arduino GSM library and enter your mobile number and a short text message to test with does it work?