apostolakisl
Senior Member
I'm trying to monitor the amps consumed by an electric motor using my cai board.
I've found these pretty cheap devices on ebay
http://www.ebay.com/itm/New-2pcs-design-20A-range-Current-Sensor-Module-ACS712-Module-Arduino-module-/321111721218?pt=LH_DefaultDomain_0&hash=item4ac3c00502
I am not sure how well this will work with cai. It looks like it takes a 5v source and outputs 2.5v at 0 amps increasing by .1v with each amp. So at its 20 amp max it would output 4.5v for a working range of 2.5-4.5v.
Any experience with this? Is there a better way to do it? It would certainly be nice if it used more of a voltage range on the output.
I've found these pretty cheap devices on ebay
http://www.ebay.com/itm/New-2pcs-design-20A-range-Current-Sensor-Module-ACS712-Module-Arduino-module-/321111721218?pt=LH_DefaultDomain_0&hash=item4ac3c00502
I am not sure how well this will work with cai. It looks like it takes a 5v source and outputs 2.5v at 0 amps increasing by .1v with each amp. So at its 20 amp max it would output 4.5v for a working range of 2.5-4.5v.
Any experience with this? Is there a better way to do it? It would certainly be nice if it used more of a voltage range on the output.