Robo-Tank Isolated PH Circuit

[jlysaght3]

Hey Rob, is there room inside of the controller case to mount this internally and keep the second USB port free for other accessories?

Second, do you recommend (either for or against) mounting the pH circuit internally?

Finally, assuming mounting this inside the controller is a viable option do you recommend powering it with the 3.3v headers, or the 5v headers?

Thanks!