interfacing RF433 mhz serially with 8051.

[keshav chavan]

sir,

 

      I want to interface RF 434mhz serially with 8051. The RF reciever module is recieving the data properly when i check it on hyperterminal,but when i connect it with 8051 it is not working. The connection is Rx(of module) with Rx(8051).

 

plz can anyone help me….

 

 

[doraemon]

Check you have set proper baud rate in 8051 program to communicate with Rx module.

[AJISH ALFRED]

Hi Keshav,

Always connect in this way;

Tx of MCU with Rx of Transmitter module

Rx of MCU with Tx of Receiver module 

[yogi]

i want to interface rx tx with 8051 so that i can control two dc motors wirelessly………….plz help me

i also want the code of that

[AJISH ALFRED]

Hi Yogi,

Please share more detailsof your project. We can help you to start with it and can give suggestion through till you finish the project. 

You can’t expect ready made code from us. If we provide you with such a code it won’t work untill all the hardware specifications match precisely with the code written, Hope you can understand.

[sampath]

I think Baud rate can be one problem,another while Tx of rfmodule connected to Rx of Controller…..their might be loose connection or else coding usart need to be done

[SHAH DISHANT H.]

Hi,

 

First you have to make a cross connection between RF Module and controller.

 

Second thing you make sure your program for UART is working fine. To test that, connect 8051 with hyperterminal and program 8051 to send few data serially.

 

All the best.

[Ashutosh Bhatt]

which crystal u hv used?

12 MHz crystal will not work here

for serial communication using 8051 u must use 11.059 MHz crystal

first make ur basic circuit of 8051.

connect its Tx and Rx with PCs Rx n Tx

now try to send data from hyper terminal and receiver it using 8051.

if this works perfect then there should not be any problem further

[Author]

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