Experimental Physics and
Industrial Control System

The computer controlled brewing project I mentioned on this list a few months back is coming along quite well. Much of the keg welding and plumbing is done, and I've made a lot of progress with the control box that holds the power supplies, relays, Raspberry Pi, Arduino Mega, status lights, etc. I'm still a long way from actually brewing with it, as I haven't welded the frame or built out the propane system, but I'd like to try some integration testing with what I have.

I've been experimenting with async, cmd_response on the Arduino / Raspberry Pi and have CSS BOY on my laptop. I think I understand how to use ao records to output temperature, flow rate, fluid levels, etc.

The next task is to model my solenoid valves and motor controlled ball valves. I'd like to express states, e.g. Open, Closed, Opening, Closing,  Partially Open, etc. and be able to send commands, e.g. Open, Close, Nudge Open, Nudge Closed. I also need to send commands with an argument, e.g. "Fill the mash tun with 4.8 gallons of water" and monitor the progress.

Right now I'd like to display and control this manually in BOY, and eventually I'd like to learn SNL to set up scripts to automate frequently used actions.

Does anyone have any suggestions on resources to learn about defining enums in the db, how they are represented over async, and how to define command buttons and state indicators in BOY?

Thanks,

Ryan