graphs power usage. Does anyone have one, and can you access the data
sans Windoze program? Are there any other cheap logging power meters?
I covet this product, perhaps even enough to loosen the old purse strings.
here's the product page:
http://www.doubleed.com/products.html
and the description of their USB (serial over-) protocol:
http://www.doubleed.com/Communications_Protocol_v442-1.pdf
kudos to them for documenting the protocol!
I see some that are battery powered and have Windoze programs, ideally
it would be powered by USB and readable from Linux, so you could leave
it plugged in your cluster...
I've used 1-wire (dallas) before. the cluster I sit next to reports
2000 temperature sensors, so haven't felt the urge to add any.
it _would_ be pretty neat to instrument the chillers, to calculate
the heat load on each, etc.
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