The final look of the cooler and electronics. It's tied up pretty neatly and the bottom of the project box is screwed into three of the heat sink fins. That arrangement helps hold the fan screws in place, too. (The fins won't move to loosen around the fan screws.) There is a slot on the each long side of the project box for the power cables. The outer fan leads run into the outside side. The inner fan and Peltier cooler leads run into the hidden side. The circuit board is held in place by old-fashioned brass PC motherboard stand-off screws to the lid of the box. The screws, nuts, and standoffs are insulated by cardboard motherboard insulating washers, just in case. The power cord literally slides into place behind the screw hole columns at the end of the project box. We'll see how that lasts over the long term.

a locking food container 12v 7 liter cooler - Peltier cooler - heat sink - fan - Electronic board R30 insulation White "computer shipping foam" black compressible foam