Which chip to use for 5-7m range for RF communication?

[advy]

i wanted to know which chip to use for 5-7m range for RF communication for reasonable costs...and also how reliable it is?..Is checksum circuit necessary for the above chips

 

[nitu]

Re: RF comm Reliability

Hi Advy,
Before suggesting I will like to know.
1. What is bit rate requirement ?
2. What is application ?
3. What is target Bit error rate ?

 

[advy]

Re: RF comm Reliability

i am a newbie...i am doing a project of contolling a robot via sms..i would also like to experiment with RF comm.i initally wanted to use r(t)lp434a...but then was warned against its unreliability...

my goals are

moving a robot to a distance of 5-7m minimum having various commands for left right,led on off etc

i am using 8051 at both ends and want to program at assembly level so checksum programs will become very difficult..

so please suggest me the way to overcome this problem

thanx

 

[nitu]

Re: RF comm Reliability

Well reliability will always be an issue with Wireless. Reliability was ensured by network mechanisms such as acknowledgements. I have used only Zigbee but it was also unreliable. So, I do not have any idea what chip can give you better reliability without network stack.

 

[flatulent]

Re: RF comm Reliability

The company that makes PIC microcontrollers also makes RF versions.

You should use the lowest bit rate possible and include error control coding such as Hamming types.

 

[safwatonline]

RF comm Reliability

PIC is by microchip

 

[advy]

RF comm Reliability

but i guess my question still remains unanswered

 

[nitu]

Re: RF comm Reliability

Hi ..

Check this link..

http://www.rentron.com/RF-Remote.htm

I hope this helps..