solarwind wrote:
> Another idea is to make a very very simple RS485 hub using (almost
> nothing but) MAX485 type chips. One can connect the the output of each
> chip to the input on all the other chips. This way, anything
> broadcasted by one node will be sent to every other node. However,
> what are the issues with this. Also, how does one terminate the line
> in this case?

An open line does not need termination in this case (no listener, so why 
bother).

But the question is: how do you switch direction?

Or for unidirectional: how do you combine all received data?

-- 

Wouter van Ooijen

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Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu

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