Making a 4x4 keypad to LCD wireless using IR

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Diaboltz

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Hi
I am doing a project writing a program to use a 4x4 matrix keypad, interacting wirelessly with a 8051 microcontroller, displaying on a 2x16 LCD screen.

Now I am a programmer, and the program I am using for the keypad to LCD is working fine, however, I have no knowledge concering wireless communication and how to set it up.

Can anybody point me in the right direction of how to make this work wirelessly using InfraRed.

Thank you.
 

you want to use infrared sensor(receiver and transmitter) ?? or some infrared network adapters ?
 

u can use RF module for this
 

Hi you don need a 4x4 algorithm because it uses bi directional data communication (column scanning and row outputs).. so you can connect the 16 buttons parallely and use a encoder to convert it binary (4 lines)and transmit it with HT12E (4bit to serial) with option of both IR/RF and decode it with HT12D (serial to 4 bits)and can give the key value to the controller..
I think this is the easiest and best method...
 

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