[Linux-aus] ArkPak 12V/240V Battery Box hacks

[Kevin Maciunas]

On 13/01/14 09:21, Peter Lawler wrote:
>
>> The cheapest source of suitable widgets
>> is probably the Arduino form factor kit - the ATMega controllers are
>> 12bit analogue which is probably enough to figure depth of discharge.
>
> Top idea, 99! I blame poor coffee for not thinking of that earlier 
> (*see above)
>
> Thanks, greatly appreciated :)
>
>
> Pete.

Since the inverter is in the "toy" category - only 150Watts - rather 
than lots of kVA check out the hall effect current devices.  You can use 
a trivial resistive divider for the volts, but the current is a bit more 
problematic.  150W means it is going to be under 30A - so the simple 
widgets that companies like Pololu make that use the ACS714 hall effect 
current sensor would work.

You could go buy one of those and a Freetronics Arduino board and you're 
basically good to go and it is all plug and play :)  Which is nice - 
almost no soldering!!! :)

/Kevin

-- 
Kevin J. Maciunas              Net: kevin at cs.adelaide.edu.au
Dept. of Computer Science      Ph : +61 8 8313 5845
University of Adelaide         Fax: +61 8 8313 4366
Adelaide 5005 SOUTH AUSTRALIA  Web: http://www.cs.adelaide.edu.au/~kevin
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