Arduino Drink Temperature Monitor

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A DIY Arduino-powered device for measuring the temperature of your drink, that doubles as a neat sculpture (or free-form circuit, whichever you prefer).

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The project consists of a wooden base (poplar, if you’re curious), hiding an Arduino Nano, a battery, and a series of LEDs embedded in the front piece of wood. The Arduino reads temperature data from an Adafruit infrared sensor that’s supported by a structure built from brass rods, which also acts as the electrical connection between the sensor and the Arduino. There’s a coaster for a mug beneath the switch, in a 3D-printed recess that hides a switch that turns the device on.

Disclaimer: I write software professionally but I’m an amateur when it comes to electronics, so don’t take anything I do in these videos as a best practice! If you know of a better way to do anything, or you see me doing something particularly silly or dangerous, please leave a comment letting me know.


Tools I use every day:

Ender 3 Pro 3D Printer: https://amzn.to/3w5bW81
Hatchbox PLA (my go-to 3D filament): https://amzn.to/39oVN3o
TACKLIFE variable power supply: https://amzn.to/34UIgOs
Tinkercad for 3D modeling: https://www.tinkercad.com (it’s not the best but hey, it’s free)
Soldering iron: https://amzn.to/3frHKhd
Wire stripper: https://amzn.to/3puQzKg

Parts list for this project:

Brass rods: https://amzn.to/2TKjUEJ
Infrared sensor: https://www.adafruit.com/product/1747
“Trigger” clamps: https://amzn.to/34X3zip
Arduino Nano (headerless): https://amzn.to/34XokKS
9V battery connector: https://amzn.to/3weq4ew
Rechargeable 9V battery: https://amzn.to/351AORu
3mm LEDs: https://amzn.to/3ptr0tf
220 Ohm Resistors (for LEDs): https://amzn.to/3fXeAqm
Coasters: https://amzn.to/3ckHpuD
Switch: https://amzn.to/3cq8Seo

Disclaimer: I may earn an affiliate commission when you buy through the links above, at no additional cost to you.

3D Model(s): https://www.thingiverse.com/thing:4880894

Code & circuit diagram: https://bitbucket.org/make-fun-stuff/drink-temperature-monitor
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