Hi @hwoodie, welcome to the community! I just wanted to let you know that I’ve flagged this question with our hardware folks, and someone with more in-depth knowledge of the subject should be following-up shortly.
From a cursory Google search, it looks like both Masterflex and W-M pumps tend to have some kind of serial interface for control. (like this, page 46.) I would recommend finding the manual for your unit and searching for “RS-232”, “DB9”, “Baud Rate”, or “Serial Connection” to get started.
In general, we’ll likely need a Node-RED flow running on Edge IO to parse whatever the pump is outputting and clean it up before sending out to Tulip. But, with how versatile node-RED is I’d be surprised if this wasn’t able to get done. Serial communications are, after all, just sending text back and forth.
In my experience, the hurdles with lab equipment like this are rarely figuring out how to talk to a piece of equipment, but more often figuring out what command it’s looking for. Arcane serial protocol from the '70s and '80s are common (and, hopefully, well documented )
If we assume the pumps are absolutely devoid of any kind of comms protocol, the ADC (Analog/Digital Converter) ports on your Edge IO are purpose-built to be connected to AC sources like a current clamp. If you clamp the wire going from the wall to the pump, we’ll at least be able to monitor when it’s on vs. when it’s off.
Check out the manual and see if you can point to a port that should be communicating something. Curious to see what you find!