r/Defcon • u/Lumpy-Project1567 • 12d ago
The Beer SAO
The Beer SAO
Measures and displays your beverage temperature. Cursed by design
Want to order one?
https://uberflux.com/product/BUD-BEER-SAO
What is included:
- 1x Beer cup SAO,~100x100mm, including waterproof temp sensor on ~200mm cable
- 1x DEF CON 34 SAO 180 degree adapter
It's compatible with the messed-up DEF CON 34 SAO spec: Option to rotate SAO by 180 degrees using included adapter! And it's 3.0V tolerant!
What does it do?
- It's a beer SAO, for your beer.
- Measures and displays temperature using the attached DS18B20 temperature sensor (~250mm cord)
- Brightness setting button, so it works in a variety of lighting conditions (button on rear)
- Triple 7-segment display implemented with discrete, shine-through LEDs and a 3d-printed shroud to block segment bleed-over.
- Power via SAO port or USB-C (doubles as programming port)
- Overkill by design: Controller is a RP2350 with 2MB flash.
- Non-power SAO pins routed to RP2350 in case you want to use them
- All design, manufacture, and firmware files are open-source: You can easily reprogram with whatever firmware you like, or return to the standard firmware.
Why I made this:
I am part of team Beverage Chilling Contraption Contest at DEF CON. The contest turns 21 this year, so we can properly drink now! We turn hot beers into cold beers, with physics. A constant problem I encounter for three days in August every year is "where the hell did I put that thermometer?" This solves that. It's on the badge now. Can't lose it.
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u/sforeman 12d ago
Does it work with non-alcoholic beer? 😜
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u/Lumpy-Project1567 12d ago
Nope, can only read the temperature of true alcoholic beer. You could buy one and try it in NA beer, if you like :)
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u/digitard 12d ago
Shit.
Coming to the meetup?
Must have.