Hi,
I'm creating an ultrasonic tracking device in which i have 4
transmitter and 1 receiver.  For that i will need to create an ID for
the receiver to distinguish where it is coming from.  Basically, from
there, i will calculate the time difference betwen the transmitter to
locate the position.

Anyway, my question, how can i distinguish the id for the receiver
part?  I was thinking of putting a constant delay for each transmitter
to transmit but how can I make sure my PIC18f252 produce an exact
delay of a certain millisecond or something.  It would need to be
exact isn't it?  Therefore, looping to create delay is out of the
question.

Another thing, on the transmitter part, how do i send the id?  I was
thinking about sending bit by bit but that would take up lots of
coding..  Any suggestions?

Do you guys think I need to implement Hamming Code for the code
correction or is that only applicable to RF design?

Thank you in advance.

From - Wan.

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics