More baby steps towards making this a finished project.
Instead of just having wires flapping around in the breeze, I added header pins to connect the output from this board. One set for ground, one set for 5V and one set for 12V. No, the placement isn't optimal, but honestly, these were an afterthought. Not to suggest that much "thought" went into the layout of the board in the first place.
A handy little adapter to power the Arduino from the header pins on the power supply board.
A pair of banana plug connectors for the SSR control.
And a pair to receive the 12VAC feed from the transformer mounted in the oven case.
Now, I just need all of this
crap, er
stuff, erm, I mean, "electronics" securely and neatly mounted in this box somehow, and all the wiring connected.
Idea #1 - wire everything up, cram the boards in there more or less as you see, and then fill the whole dang thing with resin!
Idea #2 - run back and forth to McMaster Carr, the local Ace hardware, my parts bin, etc., frantically scrambling to cobble together the right combination of standoffs, washers, machine screws, nuts, epoxy, etc. necessary to allpw me to spend hours painstakingly drilling holes, bolting things together, and tediously assembling this into something that I could be proud of (if I were on a really bad acid trip, and had no standards, and knew no one else would ever see it).
*sigh* as much as I hate both ideas, I suppose #2 will carry the day. Maybe I should make a version doing the resin thing though, and see if I can get it displayed at the Museum of Modern Art or something.