Here you can see the frost building up on the exposed Peltier cooler as the liquid inside the vessel has be chilled from 22° C / 71.6° F down to 3.7° C / 38.7° F !
You can see from the photo of my workbench, that I've got a temporary setup in place while testing, but now it's time to neaten things up! You can build your own case/stand to elevate and enclose the electronics and make the button, switch and meter more accessible.
I designed a simple stand for this, which can be cut from wood or plastic on a CNC mill or laser cutter, or 3D printed. Download the file attached below to make your own!
Here are the same curves extruded into 3mm thick models for 3D printing.
In case you'd like to edit the file, here's a zip archive containing a .step file.
Next, assemble the components to the stand. Start by removing the screws from the underside of the chiller assembly, and then screw them back in through the bottom of the stand to affix it. You may choose to remove the grill or leave it in place.
Push the panel mount temperature meter through the square hole, and then re-connect its two wire connectors.
Lastly, feed the Peltier cooler and fan wiring in and connect them to their wiring on the PCB. Here, I did so using splice taps, but you can use removable interconnects or simply solder them together (be sure to protect with heat shrink tubing in this case.
With everything in place and connected to the board, you're ready to chill a beverage! Place the temperature probe into the chilling vessel, as well as the input pump tube, which you can cut to size. In the orientation shown here, the bottom tube is the input.
Then, pour an ounce or two of drink into the chilling vessel, and place the output tube into a drinking glass.
Plug the Trinket M0 into USB power, and then flip the 12V switch.
When you're ready, press the button on the front of the drink chiller, and watch the magic! After a few minutes, the drink will be cold, and the pump will transport it into your waiting glass. Enjoy!