:)Dear Arduino forum,
After my laptop crashed and too many “avrdude” errors in my Xbee work, I bought a new HP laptop, new Xbees, shields and explorer/adapters, starting all over with Sparkfun tutorials (I see they have a way for getting around the mysterious “avrdude” error, although something for this is in the Adafruit tutorials).
I downloaded Arduino 1.01, installed it and moved “Documents>Arduino” to my new laptop, intending to use my UNOs to set up Xbee communication. Can you help with one question?
The 1.01 IDE files>sketchbook didn’t see the Doc>Arduino pdr files, but I could go to Files>sketch>add and call in a file from Doc>Arduino. It compiled OK. Impulsively, I moved files from Doc>Arduino to the sketch folder, thinking they would be available to 1.01 IDE. NOT. Now I find I can’t move the files back to Doc>Arduino so that they are available to IDE. Also, when I activate 1.01 IDE, it says the sketchbook is lost.
How can I restore Doc>Arduino or get files into a useful sketch folder?
Dear Forum,
I don't know how to navigate this Forum yet for posting to the last person that helped me. Also, I don't know how to abort this post, since it's to the wrong person, who requested that I enter the code into "Programming". This sketch is a stab at sending motion sensor data from a Xbee on a lily pad remote to a SD card on a datalogger shield (Adafruit kit) atop a Xbee shield atop a UNO R3 ("base"). Only "0" or "1" is sent, depending on whether the sensor is low or high, respectively.
My questions are: 1) How does the data from the remote get to the SD card as dataFile? It has to arrive first as "mySerial", but how would "mySerial" get into "dataFile"? 2) Maybe I need UNOs on both ends, because the program sending the data is on the "base" .
Later, I'll switch from a PIR to a HRLV-MaxSonar-EZ4 that will send timed data only if a distance is penetrated. There would be no "else" in this program. Cheers and thanks again.
/*
* Xbee wireless PIR sensor to datalogger with Arduino 1.0.1
*/
#include <SD.h>
#include <SoftwareSerial.h>
SoftwareSerial mySerial = SoftwareSerial(0,1);
const int chipSelect = 10;
unsigned long time; //Note--time will be changed to RTC later
const int ledPin = 8; // choose the pin for the LED
const int inputPin = 7; // choose the input pin (for PIR sensor)
int pirState = LOW; // we start, assuming no motion detected
void setup()
{
pinMode(ledPin, OUTPUT); // declare LED as output
pinMode(inputPin, INPUT); // declare sensor as input
Serial.begin(9600);
Serial.print("Initializing SD Card...");
if (!SD.begin(chipSelect)) {
Serial.println("Card failed, or not present");
return;
}
Serial.println("card initialized");
Serial.print("Goodnight Moon");
mySerial.begin(9600);
mySerial.println("Hello World");
}
void loop()
{
delay(6000);
float time = millis();
pirState = digitalRead(inputPin); // read input value
if (pirState == HIGH) { // check if the input is HIGH
digitalWrite(ledPin, HIGH); //LED on
delay (500);
digitalWrite(ledPin, LOW); //LED OFF
File dataFile = SD.open("datalog.txt", FILE_WRITE);
do { // Just a "while" loop would be OK, but see below
Serial.print(" "); // this Serial print is just temporary to check on the serial monitor
Serial.print(time/60000);
Serial.print(", ");
Serial.println("1");
mySerial.read(); // Why here? Is it here to set up the next "do-while"?
}
while (mySerial.available()==0); // Idon't understand: for the same reason above
do {
mySerial.print (" ");
mySerial.print(time/60000);
mySerial.print(", ");
mySerial.println("1");
Serial.read();
}
while (Serial.available()==0);
do {
dataFile.print("");
dataFile.print(time/6000);
dataFile.print (", ");
dataFile.println('1');
mySerial.read(); //would this work?
}
while (mySerial.available()==0); // Wouldn't this be "while (dataFile.available()); ??
} //Closes "if" statement
else {
do { //omitted Serial.pring list
mySerial.print(" ");
mySerial.print(time/60000);
mySerial.print(" ");
mySerial.println("0");
Serial.read();
}
while (Serial.available()==0);
do {
dataFile.print(" ");
dataFile.print(time/60000);
dataFile.print(" ");
dataFile.println("0");
mySerial.read(); //again, will this work?
}
while mySerial.available()==0); //would this work?
} //Closes "else" statwement
if (pirState == HIGH) {
// We only want to print on the output change, not state
pirState = LOW;
}
//Closes loop
}
It has to arrive first as "mySerial", but how would "mySerial" get into "dataFile"? 2) Maybe I need UNOs on both ends, because the program sending the data is on the "base" 
.