@Charles - Thx for that...im using a arduino uno, and looks like its got 3V3, so I should be able to do it correctly using a breadboard, else ill just get logic level converters.

Hi Charles, would it be possible to connect more than one of these boards to a single arduino uno somehow? I just bought 3, and would just like to know if it would be possible to read temperatures from 3 x RTD's