For convenience or pageantry, a drink-bot is a great addition to the next big get-together. That is why I built the Drinkmotizer, an Arduino and Raspberry Pi packed party-fueler.
The version I built is four feet long. It can hold up to 16 bottles and has a chaser station at the end. The cup platform movement is derived from my experience with industrial CNC lathes. In the video below, you can see that I have a 2-start 4-TPI leadscrew doing all the movement. The stepper motor I used was in the 90-oz/inch range. If I changed the stepper motor out with something more powerful, I could move it much faster. The little stepper I used tried really hard, but at higher speeds it had a tendency to slip due to friction of the coupler nut.
This is a full shot of the Drinkmotizer from the stepper motor side.
I was asked, “Why not use pressure for all the bottles?” and “There are other bar-bots that spray drinks out to a single spot, so why do I want Drinkmotizer?”
It’s simple, bottles are classy. Ask yourself, would James Bond get a drink from a glorified self-serve soda machine? I wanted to keep the liquors in their original bottles. I also wanted to see the liquid pour out and the bubbles rise.
Aesthetically speaking, it's fun to watch the drink move down the line gathering its components. With a little Raspberry Pi and Arduino know-how, and a few power tools, anyone can build a Drinkmotizer of his or her own. At least that was my supreme goal behind it all. If you have trouble or need parts, let us know in the comments section below.
"It's simple, bottles are classy. Ask yourself, would James Bond get a drink from a glorified self-serve soda machine? I wanted to keep the liquors in their original bottles. I also wanted to see the liquid pour out and the bubbles rise." Can't argue with that logic - great job Cabe!
Cabe, this is indeed a really neat creation and it is especially good to see that an editor is experienced in the same realm that he is writing about. That gives you a 40DB jump in credibility. Good job on a neat machine.
As for why you chose to use individual bottles insted of a manifold, it is clear that your choice is a lot simpler to keep clean, which is important in food and beverage handling equipment. And it undoubtedly reduces waste as well, which reduces the cost of ownership. Two very good reasons for your choice.
Now here is a suggestion for improving the servo-system performance, which is to add another motor, such as a brush-type DC motor, to provide a bit of torque assist during the moves. Not enough to be the prime mover, but just enough to assure that the stepper would not be slipping steps. The drive voltage could be derived from the stepper speed command, scaled so as to avoid slipping steps. I realize that it is a "way outside the box" suggestion, but those ideas have resulted in some impressive successes over the years.
But you might need to anchor the glass in the carrier more securely.
Nice Work Cabe, the project video was certainly refreshing to watch. I really liked the concept of the whole project. Simple yet quite useful. You can certainly add a commercial value to it, as pointed by Elizabeth.
I was impressed with the cross discipline skills involved. My Dad was a tool and die maker and taught me some lathe and milling machine technique so I can appreciate the craft. Then you added the Pi and Arduino skills. Was that a Charlieplexer I saw at the top of the montague at 2:41? What kind of valves were used?
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.