RF channeling

[Farrukh Shaikh]

 Hi..

 

i am using RF tx rx along with HT12e and HT12d . the support 4 channels… if some one can help on how can i increase the number of channels .. pLZ help.

[dagakshay]

use ht640 and ht648

[Farrukh Shaikh]

thank you for the reply .. by using these ht640 we can go upto 8 channels … is that possoble to go upto 512 channels ..??? by  the combinations of address pins ???

[dagakshay]

yes it is possible to transmitee 512 channels (even more than 512)

 

in the case for ht12d and ht12e

you have you have 4 bits to transmmite

so you can make your combination like

D0 D1 D2 D3    work

0    0    0    0       do task 1

0    0    0    1       do task 2

 

 

similarlly u have 16 combination from 4bit at a single address

and we have 8 address lines so total 255 addresses

 

so we can transmits 16 * 255 signals by using ht12d and 12e itself  *(but for that you need to go with microcontroller)

 

calculate yourself for 640 and 648…..

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