Hello Josh,
I hope you are having a nice day!
Our Port Array Modules (we tried a couple) do not open valves (neither when connected via USB and controlled through a Matlab class, nor when connected to the state machine and controlled via the GUI). Performing some tests with the multimeter helped trace the issue to the valve driver (ISO1H811GAUMA1, as in the bill of materials). The issue is that although the logic 3.3V signal arrives at the input pins of the drive, nothing changes on the output pins. The output pins are at 12V compared to the sleeve of the power jack and close to 0V compared to the output ground. So the 12V either does not make it to the drive correctly, or the logic at the input pins does not control the output. The LED output in the ports can be successfully controlled through both of our Port Array Modules. (We are using Teensy 4.0 with the firmware for the Port Array Module.)
Do you have any ideas for how we could get the Port Array Modules to open the valves?
Thanks a lot!
cheers 🙂
evgenia
