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[on:]

Hi all,
I am trying to establish RF commmunication between two arduinos.

Freeduino contains the following code (Transmission):

byte counter;
void setup(){

Serial.begin(2400);
counter = 0;
}
void loop(){

Serial.print(counter);
counter++;
delay(1000);
}

Arduino Uno contains the following code:(Receiver)

int incomingByte = 0;
void setup(){

Serial.begin(2400);
}
void loop(){

if (Serial.available() > 0) {
incomingByte = Serial.read();
Serial.println(incomingByte, DEC);
}
incomingByte = 0;
}

I could observe the data transmission on serial monitor of transmitting arduino while nothing can be seen on serial monitor of arduino uno. Please let me know where would have things gone wrong. Thanks!

[Reply #1 on:]

Can  you give a link to the RF modules (just copy the url in the text).
Is the Freeduino like a Arduino Uno ?
How is it connected ?

The best way to test it, is with the SoftwareSerial, http://arduino.cc/en/Reference/SoftwareSerial
If you create a software serial port on both Arduinos and connect the RF module to those ports, the normal serial port is still available for the serial monitor of the Arduino IDE.

Your code is not wrong, but I don't understand how the serial data flow is going. The receiver is receiving data from the RF module ? But where is it sending data to with the Serial.println() ?

If you copy your sketch in a post, please put it between the code tags. The '#'-button is for the code tags. You see the button above the text input field.

[Reply #2 on:]

Link for RF Modules:
Transmitter:

http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Wireless/General/TWS-BS-3_433.92MHz_ASK_RF_Transmitter_Module_Data_Sheet.pdf

Receiver:
http://www.sparkfun.com/datasheets/Wireless/General/MO-RX3400.pdf

Thanks!

[Reply #3 on:]

Yeah!..Freeduino is like arduino Uno
Yes!..Receiver is getting data through RF transmitter connected to TX pin of Freeduino.

[Reply #4 on:]

I still don't get it.

The receiver is connected with the USB to the PC ?
So the serial connection is with the PC ?
You use the TX pin of the Freeduino also for the RF transmitter ?

Please tell me a lot more !
Schematic for the Freeduino ?
Which RF module ? Are they tranceivers ?
Can you try the SoftwareSerial, because this is confusing (for me and for the circuit).
The RX pin is for receiving data, so the Receiver should receive with the RX pin. Can you make a photo of it ?