DGD, you mentioned doing some work on this, can you recall the exact bidirectonal current sense amp. Ive spent ages looking through datasheets and cant seem to find one with high enough voltage specs. Theyre all designed for cellphones and the like.
ZB,
Sorry didn't see this until just now.
The current detector I was using is an acs785 device from ebay, bi-diectional version 100 amps each way. The arduino c code for it is in the kid web server code posted some time ago
Not sure if thsts what you mean as the stand alone BM also had its own dc to dc converter that could take 72v dc max to 12v dc and hence to 7.5v and 5v to power the arduino and various devices
http://www.ebay.com/itm/50A-100A-150A-200A-Bi-Uni-AC-DC-Current-Sensor-Module-arduino-compatible-/111689533182?var=&hash=item1a013706fe:m:msZpOTmntlaR-hYEFieqFgw (http://www.ebay.com/itm/50A-100A-150A-200A-Bi-Uni-AC-DC-Current-Sensor-Module-arduino-compatible-/111689533182?var=&hash=item1a013706fe:m:msZpOTmntlaR-hYEFieqFgw)
Dgd