Not able to convert String to Integer when receiving data from pubnub? I did managed to upload mpu9250 sensor data on PubNub and nodeMcu but not able to use the received data to control servo 

Look at the Port reading and see that servo angle is still showing '0'



Code:-

IMU.readSensor();
char buf[500] = {};
int imu = IMU.getAccelX_mss() * 10;

sprintf(buf, "\"%d\"", imu);

Serial.print(buf);


PubNonSubClient *pclient = PubNub.publish(pubchannel, buf);
if (!pclient) return;
PublishCracker cheez;
cheez.read_and_parse(pclient);

/** You're mostly interested in `outcome()`, and,
    if it's "failed", then `description()`. 
*/

Serial.print("Outcome: "); Serial.print(cheez.outcome());
Serial.print(' '); Serial.println(cheez.to_str(cheez.outcome()));
Serial.print("description: "); Serial.println(cheez.description());
Serial.print("timestamp: "); Serial.println(cheez.timestamp());
Serial.print("state: "); Serial.print(cheez.state());
Serial.print(' '); Serial.println(cheez.to_str(cheez.state()));
Serial.print("IMU Reading: "); Serial.println(IMU.getAccelX_mss());

pclient-&gt;stop();

/* Wait for news. */
PubSubClient *sclient = PubNub.subscribe(subchannel);
if (!sclient) return; // error
String msg;
SubscribeCracker ritz(sclient);
while (!ritz.finished()) {
    ritz.get(msg);
    if (msg.length() &gt; 0) {
        Serial.print("Received: "); Serial.println(msg);
        pos = msg.toInt();
        Serial.print("value of servo angle: "); Serial.println(pos);
        myservo.write(pos);
    }

}
sclient-&gt;stop();



delay(1000);


How do I convert a string to integer so that it can be used in servo?
This is the code which worked for me:-

        msg.remove(0,1); msg.remove(msg.length());
        pos = msg.toInt();
        Serial.print("value of servo angle: "); Serial.println(pos);
        myservo.write(pos);


I had to remove this character (" ") by using msg.remove(0,1) &amp; msg.remove(msg.length()) that removes starting and ending string.