My sub vi will work with the Atlas pH board but when I try to use the board I got from Robotank it will only run 1 iteration and then the read comes back with 255(FF).   If I run the Robotank board with the attached python code it will work.  I can not figure out why it does this.  Both boards will work with the Reef Pi software. I am using Labview 2023 Community Edition and Python 3.9 on the Raspberry Pi.
 
Thanks,
 
Brett