ESP8266 And Alexa Team Up To Tend Bar

After a hard day of soldering and posting memes online, sometimes you just want to yell at the blinking hockey puck in the corner and have it pour you out a perfectly measured shot of your favorite libation. It might not be the multi-purpose robot servant we were all hoping to have by the 21st century, but [Jake Lee] figures it’s about as close as we’re likely to get for under fifty bucks or so (Jake’s security certificate seems to have expired a few days ago so your browser may warn you, here’s an archived version).

From the hardware to the software, his Alexa-enabled drink pouring machine is an exercise in minimalism. Not that there’s anything wrong with that, of course. The easiest solutions are sometimes the best ones, and we think the choices [Jake] made here strike a perfect balance between keeping things simple and getting the job done. It’s by no means the most complete or capable robotic bartender we’ve ever seen, but it’s perhaps the one most likely to be duplicated by others looking to get in on the voice-controlled drinking game.

So how does it work? For one, [Jake] didn’t go through the trouble of creating a “proper” Alexa skill, that’s quite a bit of work just to pour a shot of rum. Instead, he took the easy way out and used the FauxMo library on his ESP8266 to emulate a few WeMo smart switches. Alexa (and pretty much every other home automation product) has native support for turning these on and off, so with the proper code you can leverage it as an easy way to toggle the chip’s digital pins.

Using the Alexa’s “Routines” capability, these simple toggles can be chained together and associated with specific phrases to create more complex actions. For example, you could chain the dispensing alcohol, lowering the room lighting, and playing music all to a single voice command. Something like “I give up”, perhaps.

When Alexa tells the drink dispenser to turn on, the ESP8266 fires a relay which starts up a small 12 V air pump. This is connected to the bottle of rum though a glass tube that [Jake] bent with a blow torch, and starts to pressurize it. With the air at the top of the bottle pushing down on it, a second glass tube gives the liquid a way to escape. This method of dispensing liquid is not only easy to implement, but saves you from having to drink something that’s passed through some crusty eBay pump.

If you prefer the “right” way of getting your device talking to Amazon’s popular home surveillance system, our very own [Al Williams] can get you headed in the right direction. On the other hand, if the flowing alcohol is the part of this project that caught your attention, well we’ve got more than a few projects that cover that topic as well.

Beautiful Pi-Powered Cocktail Machine

Science fiction has long had the idea that a good drink should just appear from a sliding panel in a wall. Bartending is to be the preserve of robots and AIs – manual control is for the past, and in an effort to continue our progress to towards that sci-fi future, Reddit user [HighwingZ] has built a beautiful machine that mixes and serves drinks.

Instead of a sliding wall panel, [HighwingZ] has built a hexagonal container. Five of the six sides contain bottles to fill the drink with, the last panel contains the spigot and a spot for the glass. The machine works by weighing the liquid that gets poured into the glass using a load cell connected to a HX711 load cell amplifier. An aquarium pump is used to push air into whichever bottle has been selected via some magnetic valves which forces the liquid up its tube and into the glass. A simple touch screen UI is used so the user can select which drink and how much of it gets poured. All of this is connected to a Raspberry Pi to control it all.

The whole thing is built into a great looking wooden showcase with see-through sides, so you can see the bottles to be used to make the drinks. [HighwingZ] put the Python code that controls everything on github for anyone wanting to make their own. There are a few cocktail making hacks on the site, like this one, or this one if you need some inspiration.

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Drinkro The Synchro Bartender

There is a significant constituency among hackers and makers for whom it is not the surroundings in which the drink is served or the character of the person serving it that is important, but the quality of its preparation. Not for them the distilled wit and wisdom of a bartender who has seen it all, instead the computer-controlled accuracy of a precisely prepared drink. They are the creators of bartending robots, and maybe some day all dank taverns will be replaced with their creations.

Drinkro is a bartending robot built by the team at [Synchro Labs]. It uses a Raspberry Pi 3 and a custom motor controller board driving a brace of DC peristaltic liquid pumps. that lift a variety of constituent beverages into the user’s glass. There is a multi-platform app through which multiple thirsty drinkers can place their orders, and all the source code and hardware files can be found in GitHub repositories. The robot possesses a fairly meagre repertoire of vodka and only three mixers, but perhaps it will be expanded with more motor driver and pump combinations.

There is a video of the machine in action, shown below the break. We can’t help noticing it’s not the fastest of bartenders, but maybe speed isn’t everything.

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In Soviet Russia, Drink Serves You

There’s just something about having an automatic bartending machine that screams “we’re in the future now” — and it’s a future we approve of. This project is called the Alkomat (Google Translate), and it’s a handy little machine capable of mixing drinks for five people at a time.

Inspired by the RumBot, [Strn] wanted to practice his hand at hardware integration and product development from idea to creation — and just looking at some of the photos of this, he did a damn good job.

On the inside of Alkomat is a recycled inkjet XY carriage which can index on each of the five drinks. A series of four tubes feed up to peristaltic pumps that provide alcohol from the bar rack. Once he had the hardware sorted out and operational, he set out to make the machine look as presentable as possible. Using a mixture of counter-tops and laminated wood panels from furniture, he’s boxed up the whole thing and made it look like something you might actually be able to buy from a store — maybe IKEA?

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