[Nut-upsdev] Questions on the state of the UPS market

[Eric S. Raymond]

Arjen de Korte <nut+devel at de-korte.org>:
> Also note that the requirement for an IP stack makes this far more  
> complex than what you need for a USB interface. So while the hardware  
> for the interface may be cheap, it places much higher demands on the  
> microcontroller (and firmware) to actually use it.

Indeed.  I concluded during my last serious look at this market in 2005 
that Ethernet is way overkill for this class of device, RS232C should
be shot through the head because it can't autoconfigure, and USB is an
almost perfect functional match for what UPSes need to do.
-- 
		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>