[tech] Dec Server Help!!

Simon Fryer fryers at ucc.gu.uwa.edu.au
Sun Jan 24 21:28:09 WST 2010


G'Day.

> A while ago Mitch Kelly tapped:

> I need some assistance. Does anyone know a DEC server that can run from 12v
> and use Less than 1A, or another way we can do Serial over IP ?

I think certain models of the Dec Server 90s are reasonably small form
factor and appear to be lower current. But from 12V - almost certainly not.

There are many ways to do serial over IP and lots of COTS hardware. The
downside is that the COTS solutions will either work on 24V DC or 
230/240VAC. Solutions for 12V are not all that common.

My suggestion is a low end PC running Linux/*BSD and python with pyserial[1] 
or go to 24V. 

For what it is worth, in Feb I am going to spend a couple of days on
Anglesey using COTS Ethernet to serial (RS232 and RS485) converters to
interface to some wind turbines. 

[1] I came across pyserial last night for another project and it looked
useful for this sort of thing. 

Simon

-- 
------------------------------------------------------------------------
"Well, an engineer is not concerned with the truth; that is left to 
philosophers and theologians: the prime concern of an engineer is 
the utility of the final product."  
Lectures on the Electrical Properties of Materials, L.Solymar, D.Walsh


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