12/03/03 Update
Ok, some good news. Other than the ORP probe, all the hardware is finally ready and functional. I just have to finish the code for the controller and the project will be ready to turn into an actual PCB. The ORP is going to be a modular addition like the pH probe, so it shouldn't be an issue to get a prototype of the main controller together. I did have to go up to the Atmega128 for prototyping. Here is the current project with all hardware in place and working.
So it was a quick update this time, but now it's time for the coding...SWN