I have modules that I can let go in the near future once I'm done with the I2C library for those that want to ditch the head unit and use a different controller with more flexibility. I currently have (sorry forget the models). Temp, PH, ORP, Salinity, Head Unit, PowerBars, and misc cabling.
Hopefully this isn’t too old of a post...
@JDowns does this mean you’ve determined that the DIgital Aquatics modules communicate via I2C bus? Have you been able to decipher the messaging between components? Would love to interface these modules with an arduino or RaspPi