title: Convert char* to int arduino
body: <p>I have problem to get int value from char.. here </p>
  
  <p>Serial.println(((char*) "3772837903"));
  Serial.println(atoi((char*) "3772837903"));</p>
  
  <p>
  3772837903
  2147483647</p>
  
  <p>anybody can help? thx</p>