On a hot day, what's better than a nice cold beverage? Nothing, that's what! Here's a fun way to make made-to-order chilled drinks without using ice (which can dilute things), the Chilled Drinkibot!

The Chilled Drinkibot is a thermoelectric cooler that uses a Peltier cooler, a large heat sink and fan, and a small pump to chill and then deliver your beverage to your waiting glass. It uses a Trinket M0 running CircuitPython to control things, and a temperature gauge to display your final chill value.

Parts and Materials

In addition to the parts listed below, you'll also need a small conductive cup, preferably copper or something silver plated, and material to mount the components. This can be a plastic project box, 3D printed PLA, laser cut acrylic, or anything you like, really! Just so long as we can keep the electronics up above the liquid, and the Peltier cooler fan elevated for airflow.

1 x Adafruit Trinket M0
for use with CircuitPython & Arduino IDE
1 x Peltier Thermo-Electric Cooler
Module+Heatsink Assembly - 12V 5A
1 x Peristaltic Liquid Pump
with Silicone Tubing
1 x Illuminated Toggle Switch
with Cover - White / Clear
1 x 12V 5A switching power supply
12V 5A switching power supply
1 x Female DC Power adapter
2.1mm jack to screw terminal block
1 x 5V 2.4A Switching Power Supply
with 20AWG MicroUSB Cable
1 x Heat Sink Thermal Tape
3M 8810 - 80mm x 80mm
1 x Adafruit Perma-Proto Half-sized Breadboard PCB
Adafruit Perma-Proto Half-sized Breadboard PCB
1 x Black Nylon Screw and Stand-off Set – M2.5 Thread
Black Nylon Screw and Stand-off Set – M2.5 Thread
1 x USB cable - A/MicroB - 3ft
USB cable - A/MicroB - 3ft
1 x Adafruit Parts Pal
Adafruit Parts Pal
You will also need one 1000uF electrolytic capacitor.

You can watch the live build in these two episodes of John Park's Workshop Live.

This guide was first published on Nov 03, 2017. It was last updated on Jan 25, 2024.

This page (Overview) was last updated on Nov 02, 2017.

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