Code: (the 'ok' function was ruthlessly stolen from Rob Faludi)

int potPin = 0; //analog pin
int outputPin = 10;
int ledPin = 13;
int valuein =0;
int valueout =0;
char inByte = 0;
long prevmilles= 500;
long prevmilles2= 500;
long prevmilles3= 500;

void setup () {
// set pins to input and output appropriately
pinMode(ledPin, OUTPUT);
pinMode(outputPin, OUTPUT);

// start up the serial connection with 9600-8-n-1-true (non-inverted):
Serial.begin(9600);

// blink the status LED
blinkLED(ledPin, 3);

// for some reason it seems to help to send an arbitrary character first
//then pause for the guard time before requesting command mode
Serial.print("X");
delay(1100);
// put the XBee in command mode
Serial.print("+++");
delay(1100);
// wait for a response from the XBee for 2000 ms, or start
// over with setup if no valid response comes

if (returnedOK() == 'T') {
// if an OK was received then continue
}
else {
setup(); // otherwise go back and try setup again
}

 

Serial.print("ATID2222,");
Serial.print("MY2,");
Serial.print("DH0,");
Serial.print("DL1,");
Serial.println("CN");

if (returnedOK() == 'T') {
// if an OK was received then continue
}
else {
setup(); // otherwise go back and try setup again
}

}

void loop () {
if (millis() - prevmilles >=100){
valuein = (analogRead(potPin)/4);
Serial.print('a');
Serial.print(valuein);
Serial.print('b');
prevmilles = millis();
}
/*if (millis() - prevmilles2 >= valueout){
digitalWrite(outputPin, HIGH); // sets the LED on
prevmilles2 = millis();
}else{ digitalWrite(outputPin, LOW); // sets the LED off
}*/
if (millis() - prevmilles3 >=100){
if (Serial.available() > 1) {
valueout=SerialLook();
analogWrite(10, valueout);
}
prevmilles3 = millis();
}
}

void blinkLED(int targetPin, int numBlinks) {
// this function blinks the status LED light as many times as requested
for (int i=0; i<numBlinks; i++) {
digitalWrite(outputPin, HIGH); // sets the LED on
delay(250); // waits for a second
digitalWrite(outputPin, LOW); // sets the LED off
delay(250);
}
}

char returnedOK () {
// this function checks the response on the serial port to see if it was an "OK" or not
char incomingChar[3];
char okString[] = "OK";
char result = 'n';
int startTime = millis();
while (millis() - startTime < 2000 && result == 'n') { // use a timeout of 10 seconds
if (Serial.available() > 1) {
// read three incoming bytes which should be "O", "K", and a linefeed:
for (int i=0; i<3; i++) {
incomingChar[i] = Serial.read();
}
if ( strstr(incomingChar, okString) != NULL ) { // check to see if the respose is "OK"
// if (incomingChar[0] == 'O' && incomingChar[1] == 'K') { // check to see if the first two characters are "OK"
result = 'T'; // return T if "OK" was the response
}
else {
result = 'F'; // otherwise return F
}
}
}
return result;
}

long SerialLook() {
char ASCIIString [100]; // in string
char inByte='c';
long number = 0; // return number
int stringPos = 0; // keeps track of places in number
if ('a' == Serial.read()){ // for id parsing of serial
while(inByte !='b'){
inByte = Serial.read();

// save ASCII numeric characters in string:
if ((inByte >= '0') && (inByte <= '9')){
// Serial.println( inByte);
ASCIIString [stringPos] = inByte;
stringPos++;
// Serial.println( stringPos);
}
}
}
Serial.flush(); // flush junk
number = SerialToInt( ASCIIString,stringPos ); /// convert captured string to an int

stringPos = 0; //reset count num

return number;
}

/*****************
the important parts of the function conversions
are to have a inverting for loop go
from last in array to first and call the plusBaseTen()function
each time.
*******************/

// hits up the number by base ten powered
long timesBaseTen(int _move){ // the
long place = 1; //base 10
int n = 0;
if( _move < 1){ return 1;}//ones place no change
else{
for( n= 0; n<_move; n++){ place = place*10;}
}return place;
}



// converts a ten digit ASCII to int
long SerialToInt(char *_input, int _arrayLength){
long number=0;
long total=0;
int arrayLook=0;
int i = 0;
char s[]={"h"}; // work around
int arrayLength =_arrayLength-1; // need one less than actual length 0 is 1
// call invert string for proper string power order
for(i =arrayLength; i >= 0;i--){
// Serial.println(i);
// Serial.println(_input[i]);
// picks out ASCII numbers for error check
if ((_input[i] >= '0') && (_input[i]<= '9')){
s[0] = _input[i];// work around to get string arg
number = atoi(s);// ASCII to converts number
number = (number * (timesBaseTen(arrayLook))); // puts number in its place
arrayLook++;
total = number+total;
}
}
return total;
}