I need to measure a DC voltage that must be isolated from the Adruino power. (It will be about 100V but that should be a non-issue.) I expected to find a voltage sensor board but have not. It appears that a Broadcon ACPL-C87B chip would do the job but no boards using it.
I can make one but getting one chip in Guatemala will cost me five times the price of the chip. Anyone know of a board using this chip? Or, an alternative?