IR Remote Control

[mychangl]

I have a panasonic TV remote control. Since the remote hanset itself has so many buttons, i plan to simplify it by creating a simple handset that only contain -> ( on/off, channel up, channel dn, volume up, volume dn ).
i used 40KHz IR decoder to remove the carrier and use PIC to capture the data into the memory, it just don't work ! the TV doesn't respond !

Any better idea ?

[Archangel]

I have a panasonic TV remote control. Since the remote hanset itself has so many buttons, i plan to simplify it by creating a simple handset that only contain -> ( on/off, channel up, channel dn, volume up, volume dn ).
i used 40KHz IR decoder to remove the carrier and use PIC to capture the data into the memory, it just don't work ! the TV doesn't respond !

Any better idea ?
Are you modulating a 40KHz signal with that data on your homemade unit? Or are you only sending data without a carrier frequency?

[sougata]

Hi,

IR remotes uses different types of protocols mainly manchester oriented. However I have seen some chinese remotes which uses a variable pulse duty scheme with hold data. I don't know how you decoded the signal in the first place but the below links can be of real help:

http://www.piclist.com/images/boards/irwidget/index.htm

http://home1.stofanet.dk/hvaba/fprc5rx/index.html