KR SENSE Current and Voltage Sensor

Components & Accessories Power
1

Hi All,

Would like to connect the KR SENSE Current and voltage sensor https://www.sparkfun.com/products/16407 to 3v3 logic to monitor a 48V battery. Can I just use a 45 Ohm resistor or is there a better way to reduce the 12V to 3v3 scale for the Vout? I can’t seem to find a precision resistor divider with a R1=3xR2 anywhere. A little help would be great. :slight_smile:

2

Personally, I’d probably try to use a “step down converter” or “DC to DC converter” and test/verify it to work @ 3.3v when in-hand

Normally we have a few options, but we are currently out of stock…amazon has a few, you’re looking for something like this https://www.amazon.com/s?k=step+down+48 … nb_sb_noss