[AVR] interfacing RF MODULE with ATMEGA32

[ANS HAFEEZ]

SALAM
i correctly Interface This RF MODULE but there is TOO much NOISE AT reciever END

when i connect TX pin of one microcontroller with the RX pin of other microcontroller with a Wire it just works fine but problem occuer when i put RF MODULE between them there is noise at reciever end . . .
the LEDs on output pins continosly blinking even when transmitter is off. . . .
My code working fine

please help how to remove noise . . .

**broken link removed**

 

[jayanth.devarayanadurga]

Aa a 100 nF (0.1 uF) Ceramic capacitor between power pins of RF modules very close to the RF modules. Do it for both Rx and Tx.

 

[ANS HAFEEZ]

i tried this but still there is too noise to work plz help

 

[jayanth.devarayanadurga]

Buy a good quality RF module.

 

[bigdogguru]

Typically OOK/ASK TX/RX modules like the units you've purchase require the implementation of some method of software encoding scheme, like Manchester encoding, to transmit and receive reliably in real world conditions.

Which is why most applications utilized transceivers with encoding provided by the hardware in the transceiver module.

Another option is to utilize additional hardware encoding/decoding hardware like the HT-12E/D



What baud rate are you attempting to transmit/receive the data?

Baud rates also must be kept reasonably low, 1200 cps or lower.



The following threads on the subject maybe of interest:

https://www.edaboard.com/threads/237573/

https://www.edaboard.com/threads/265994/

https://www.edaboard.com/threads/214119/

BigDog

 

[ANS HAFEEZ]

yes i am using the baud rate of 1200