Compass , getting data

Projects General Guidance
1

Hi every one ;

I have 3d compass from Rion-tech.com its name HCM505B RS-232
and I need to get data from it to my Arduino UNO
I am beginner so as I read I have to send byte in some numbers and recive then bytes that containing the values like 68 04 00 04 08
I try to do that but I have no response..

so can any one help me please . .
I know that is a very simple thing for experts but as I said I am beginner.

datasheet
http://www.rion-tech.net/uploadfile/20130110/20130110092946290.pdf

I use arduino uno and here is my code;

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial) {
;
}

Serial.println("Goodnight moon!");

// set the data rate for the SoftwareSerial port
mySerial.begin(9600);
mySerial.println("Hello, world?");
}

void loop() // run over and over
{

if (mySerial.available())
Serial.write(mySerial.read());
if (Serial.available())
mySerial.write(Serial.read());
}

2

any one can help me here please

3

(deleted)

4

You ordered the wrong part number to connect directly to the Arduino. You should have gotten this one:
HCM505B-TTL

If you want to use the one you have, you must convert the signal from RS-232 to TTL.

5

okay
thank you for help first but how can i do this convert?

6

Use a device like the Maxim MAX232.

7

Okay

thank you SurferTim

8

I use MAX232CPE to convert between TTL and RS232 and make the circuit and every thing seems alright

Bu I still can't getting dat from this compass
the command that respose to get data; send "68 04 00 04 08"
then the value will recived

the problem that when i send this code in the command in the serial no thing happens
and I tried to send the order as
MySerial.print(68 04 00 04 08);
an error message says ; " integer constant is too large for 'long' type" apears

9

Kamal-15:
any one here guys
my year project depends on this

Maybe this is enough of a clue... We DO NOT DO HOMEWORK FOR YOU.

//Code for Dialling a number
char phone_no[]=”9443303461”;
void setup()
{
Serial.begin(9600);  //Open Serial Connection at baudrate 9600
delay(2000);
Serial.println(“AT”); // Wake up GSM
Serial.print(“ATD”); //Dial the phone number using ATD command
Serial.print(phone_no);
Serial.println(“;”); // Semicolon is a must at the end
delay(10000);
Serial.println(“ATH”); // After a delay of 5 secs Hang the call
}
void loop()
{
// empty loop.If you enter the above code here,the call will be made FOR EVER repeatedly.
//Take Caution while coding under loop.At some condition you’ve to terminate the Call
}