which is most widely used rf encoder/decoder - Electronic Circuits Projects Diagrams Free

nikhil arora · 23rd February 2006, 09:52 AM

I am designing a low cost digital wireless link, for these i need low cost rf encoder and decoders but with more address and data pin.

I got good encoders and decoders from
1> Holtek
2> samhap microelectronics

I want to know what other option do I have for encoders/ deocoder and good rf modules too.

**Nigel Goodwin** · 23rd February 2006, 10:44 AM

Make your own decoder and encoder using PIC's, which is basically what the Holtek devices are (although they may be different micro-controllers and not PIC's).

nikhil arora · 25th February 2006, 12:15 PM

I was planning to use software method for enocoding and decoding but i was not having any idea how these stuff works.

**Nigel Goodwin** · 25th February 2006, 01:32 PM

Quote:

Originally Posted by nikhil arora

I was planning to use software method for enocoding and decoding but i was not having any idea how these stuff works.

Check my PIC tutorials for Manchester coding on a radio link!.

zachtheterrible · 25th February 2006, 06:29 PM

One very aggravating thing about holtek encoders and decoders, well the ones I used anyway- HT12A and HT12D is that they require the transmitter to always be on.

I forget exactly how I did it, but I rigged the encoder up so that it doesn't send out a constant signal, it only sends out a signal when it is triggered.

nikhil arora · 2nd March 2006, 06:52 AM

thank you
Nigel Goodwin
I will go through the tutorial
basically i use 51 chips but really want to shift towards pic's
which is better can i ask here

**Nigel Goodwin** · 2nd March 2006, 10:11 AM

Quote:

Originally Posted by nikhil arora

thank you
Nigel Goodwin
I will go through the tutorial
basically i use 51 chips but really want to shift towards pic's
which is better can i ask here

'Better' is a purely relative term, PIC's are generally more popular, but if you already use 51 chips I would see no reason to change?.

The 'best' device is the one that does the job - there's rarely much real difference between devices.

nikhil arora · 2nd March 2006, 11:57 AM

Quote:

but if you already use 51 chips I would see no reason to change

I see one reason pic's eat lesser power and even lesser when in power down mode in compare to 89c2051,89s52 etc.
and i think at same cost and ease of availability
low power atmel chips are harder to find

**Nigel Goodwin** · 2nd March 2006, 12:03 PM

If you've got a good reason to chnage, then go for it!.

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23rd February 2006, 09:52 AM	(permalink)
nikhil arora	which is most widely used rf encoder/decoder I am designing a low cost digital wireless link, for these i need low cost rf encoder and decoders but with more address and data pin. I got good encoders and decoders from 1> Holtek 2> samhap microelectronics I want to know what other option do I have for encoders/ deocoder and good rf modules too.

23rd February 2006, 10:44 AM	(permalink)
Nigel Goodwin	Make your own decoder and encoder using PIC's, which is basically what the Holtek devices are (although they may be different micro-controllers and not PIC's). __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

25th February 2006, 12:15 PM	(permalink)
nikhil arora	I was planning to use software method for enocoding and decoding but i was not having any idea how these stuff works.

25th February 2006, 06:29 PM	(permalink)
zachtheterrible	One very aggravating thing about holtek encoders and decoders, well the ones I used anyway- HT12A and HT12D is that they require the transmitter to always be on. I forget exactly how I did it, but I rigged the encoder up so that it doesn't send out a constant signal, it only sends out a signal when it is triggered. __________________ I'm no electronics god, i just talk too much.

2nd March 2006, 06:52 AM	(permalink)
nikhil arora	thank you Nigel Goodwin I will go through the tutorial basically i use 51 chips but really want to shift towards pic's which is better can i ask here

2nd March 2006, 12:03 PM	(permalink)
Nigel Goodwin	If you've got a good reason to chnage, then go for it!. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk