rf module: is an encoder/decoder important?

hi,

We are doing a project on wireless messenger. I would like to ask if it is really needed to use an encoder/decoder on your rf module when interfacing it to PIC16f84? I'm also using a 4x4 keypad and an lcd interface with this. I would appreciate your help.

encoding and decoding can easily be implemented in your microcontroller. You might need a modulator/demodulator if this is not added in the RF module.

Holtek do have some nice encoder/decoder chips that you should be able to implement in software! Check for example the following datasheet:
http://www.holtek.com.tw/pdf/consumer/2_12ev110.pdf

Cheers

Hi,

Thank you for this information! We also saw the holtek encoder/decoder chips but it is not readily available in our area, so we thought of just placing the tx/rx directly to the microcontroller. But we haven't tried it yet. Also, we haven't thought about implementing the holtek chips with software instead.

Anyway, thank you for this idea! We appreciate it.