- Sun Apr 01, 2018 4:02 pm
#75064
I want to measure the voltage of batteries in series with the ADC pin. Since I have only 1, these are my ideas for making the circuit. The batteries will be charged by 2 separate chargers.
On the arduino forum post #2 they suggest a good circuit, but it takes to be powered by a separate battery and I am powering my circuit from the 2 batteries that I measure (12V, 120Ah) with a DC to DC step down converter. The arduino forum say that the arduino ground can handle this circuit, but can the Amica rev 2, v 1.0 ground handle it:
http://forum.arduino.cc/index.php?topic=21526.0
1 relay, 1 ground, should work:
https://www.dropbox.com/s/r6hrg1h8k0xat ... 2.jpg?dl=0
2 relays, 2 grounds, I dont know how to make the second ground, I am wondering why not a schassis ground (meaning a wire connected to the battery bank's metal frame):
https://www.dropbox.com/s/luvd54gupv8oc ... 1.jpg?dl=0
I need to finish this by Tuesday, so help is appreciated!
On the arduino forum post #2 they suggest a good circuit, but it takes to be powered by a separate battery and I am powering my circuit from the 2 batteries that I measure (12V, 120Ah) with a DC to DC step down converter. The arduino forum say that the arduino ground can handle this circuit, but can the Amica rev 2, v 1.0 ground handle it:
http://forum.arduino.cc/index.php?topic=21526.0
1 relay, 1 ground, should work:
https://www.dropbox.com/s/r6hrg1h8k0xat ... 2.jpg?dl=0
2 relays, 2 grounds, I dont know how to make the second ground, I am wondering why not a schassis ground (meaning a wire connected to the battery bank's metal frame):
https://www.dropbox.com/s/luvd54gupv8oc ... 1.jpg?dl=0
I need to finish this by Tuesday, so help is appreciated!
