I am going to measure 110vdc using ads1015
but when on trial to measure just 12 vdc using resistor voltage divider in differential mode because say I dont know which plus or gns . ads got burned
would really appreciate any suggestion, thx
Post an annotated schematic of how you built this crispy critter. Post links to technical information on the parts. What is the source of the 110vdc? I highly recommend you get a copy of the Arduino Cookbook and read it.
I change V Source to 12VDC for a trial and ads got burned