@jclo13 Two general guidelines has been ignored in the github post, which are sensor & ground isolation and duration of excitation : ā€œ Sensors must be powered individually, and the ground must be isolated from sensor to sensor. Even if powered individually, an open ground path to another un-powered sensor can't be allowed. This is best accomplished using multiplexers to open and close the appropriate channels. ā€œ For additional details please refer to : www.irrometer.com/200ss.html