Problem on passing value from adxl to arduino mega

Using Arduino Sensors
1

I am a new beginner. is here the right place to post my problem here?I need help here. I have an ADXL345 evaluation board. and 1 ARDUINO MEGA 2560. I am thinking of passing 3 axis data to Arduino but it failed. Anyone can guide me here?I connect pin to pin. only connect it through tx-to-rx.
and write a simple program to test whether i receive the data or not. But i didnt receive the data. Anyone can help me? =(
this is my simple code:

int data = 0;   // for incoming serial data

void setup() {
        Serial.begin(9600);     // opens serial port, sets data rate to 9600 bps
}

void loop() {

        // send data only when you receive data:
        if (Serial.available() > 0) {
                // read the incoming byte:
                data = Serial.read();
                Serial.println(data, DEC);
        }
}

i refer to the reference in http://arduino.cc/en/Serial

2

What kind of development board do you have? The ADXL345 uses the I2C or SPI bus.

3

Bajdi:
What kind of development board do you have? The ADXL345 uses the I2C or SPI bus.

i get the product from here:

I just using the Tx pin to transmit data from adxl to arduino....isnt it the correct way?

btw thanks for your reply appreciate much!

4

That page states that the default baud rate is 57600bps.

5

The evaluation board is 3V3 only - so how are you level converting?

6

Bajdi:
That page states that the default baud rate is 57600bps.

i test in 57600bps but still all in vain...is there any error in my code??or connection error between the pins??

7

MarkT:
The evaluation board is 3V3 only - so how are you level converting?

ya i did read the user guide of the evaluation board...so i am using 3v3 to power up the board.....

thanks for your reply^^