Sensor Data

How do you measure soil moisture?

Hey the applications looks amazing. i would like to try as well. Where can i find the source code for the same?

you can help me with the code?
thanks

Hey! Am working upon a very similar project, based upon trafficability, I send the live data to thingspeak via GSM, and then collect it over an app, where the mathematical model has been stored which gives the trafficability results.

And this is the code am using:
#include
#include

SoftwareSerial mySerial(9, 10);

int sensor_pin= A0;
int output_value;
void setup() {
mySerial.begin(9600); // the GPRS baud rate
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
Serial.println("reading from the sensor");
delay(2000);
}

// the loop routine runs over and over again forever:
void loop() {
output_value=analogRead(sensor_pin);
output_value=map(output_value,1023,0,0,100);
Serial.print("Moisture:");
Serial.print(output_value);
Serial.println("%");
delay(1000); // delay in between reads for stability
Send2Pachube();

if (mySerial.available())
Serial.write(mySerial.read());
}
void Send2Pachube()
{
mySerial.println("AT");
delay(500);


mySerial.println("AT+CREG?");
delay(500);

mySerial.println("AT+CGATT=1");
delay(500);

mySerial.println("AT+CIPSHUT");
delay(500);

mySerial.println("AT+CIPSTATUS");
delay(500);

mySerial.println("AT+CIPMUX=0");
delay(1000);

ShowSerialData();

mySerial.println("AT+CSTT=\"airtelgprs.com\","",""");//start task and setting the APN,
delay(500);

ShowSerialData();

mySerial.println("AT+CIICR");//bring up wireless connection
delay(1500);

ShowSerialData();

mySerial.println("AT+CIFSR");//get local IP adress
delay(1000);

ShowSerialData();

mySerial.println("AT+CIPSPRT=0");
delay(1500);

ShowSerialData();

mySerial.println("AT+CIPSTART=\"TCP\",\"184.106.153.149\",\"80\"");//start up the connection
delay(3000);

ShowSerialData();

mySerial.println("AT+CIPSEND");//begin send data to remote server, might have to add =44
delay(2000);
ShowSerialData();

String str="GET https://api.thingspeak.com/update?api_key=BB4SNJ9GZNGJWKKS&field1=" + String(output_value);
mySerial.println(str);//begin send data to remote server
delay(2000);
ShowSerialData();

mySerial.println((char)26);//sending
delay(2500);//waitting for reply, important! the time is base on the condition of internet
mySerial.println();

ShowSerialData();

mySerial.println("AT+CIPSHUT");//close the connection
delay(100);
ShowSerialData();
}
void ShowSerialData()
{
while(mySerial.available()!=0)
Serial.write(mySerial.read());
}


But the At+CIPSEND command doesn't work, can you please help me out with it!!

In the above code the libraries used were
softwareSerial.h
String.h