Room Temperature Cup Holder

Cup Holder to Keep Your Beer (or Other Beverage) at Room Temperature

Parker Newman

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Description

This useless cup holder will keep your beer or other beverage at room temperature by either heating or cooling it. I know, it doesn't sound very useless... who doesn't enjoy a luke warm beer on a hot day or a tepid coffee after shoveling your car out of the snow!!

The temperature is monitored via an IR thermometer and an Arduino Uno. A dual H-Bridge paired with a Peltier heater/cooler heats or cools your drink until it reaches room temperature.

Details

The MLX90614 is a great module for non-contact temperature sensing and I used the Arduino UNO because I had some sitting around.

I didn't record a video of it working because it would be literally the most boring video watching a cold beer warm up to room temperature. The Useless Machine does its job though and raises the temperature of the beer much faster than ambient!

Files

mlx_v2.stl sla - 49.98 kB - 08/09/2019 at 23:03		Download
useless_machine.ino x-arduino - 1.87 kB - 08/09/2019 at 23:00		Download

Components

1 × Stainless Steel Boat Cupholder
1 × TEC1-12706 Peltier Heater/Cooler
1 × Solder
1 × USB A to B cable
1 × Heat/Cold Sink

View all 15 components

Build Instructions

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1

Attach Thermal Adhesive to Heat/Coldsink
2

Attach Peltier to Heatsink via Thermal Adhesive

Remove the blue protective plastic from the thermal adhesive. Place the Peltier module on the thermal tape numbers down
3

Attach Thermal Adhesive to Peltier and Attach Cup Holder

Apply 2 pieces of adhesive tape to the Peltier heater/cooler, remove the blue plastic from the adhesive and attach the cup holder. Make sure you get it centered the first time as the adhesive is very strong and the Peltier units are fairly fragile!