Atlas Scientific Returning -9999 Values After One Good Reading

Hi All,

I’ve seen this discussed on the forums before but it doesn’t seem to have been solved. I have a recurring issue with the Atlas Scientific combination industrial pH/temperature sensor where it returns one good temperature value and then all subsequent values return as -9999. It will always return one good reading on startup. The other sensors work fine.

I tried attaching ferrite to the cables thinking it was an electrical noise issue but that didn’t fix it. I saw an old thread where someone had the same issue with an SDI sensor and the issue was fixed by including a non concurrent build flag.

Does anyone have any thoughts on what else the issue could be? Could the same type of build flag be effective in this case? I’ve linked our Github here. We’re working on the calibrator branch. https://github.com/fionasouthwell/TIMU-Mayfly/tree/calibrator