Does the normal/analog D5 or D5 PWM from Aqua Computer generate a real tacho signal?, because it's another analog PCB and not the digital mps circuit board, right? Is this analog RPM signal still accessible/present in the D5 Aquabus/USB pump mechanic and could it be made usable again by modding the pump?
The rpm wire is connected to an input on the mps board.
I guess you could split that wire and attach another fan connector but I have no idea if that would work.
I see that the new version of aquasuite finally integrates the USB pump into the front display pages so perhaps this is less necessary now.