Have you ever wanted your very own robotic bartender that automatically mixes your favorite drinks when commanded to? Have you ever wanted a drink that was vacuum-infused? If your answer to one of these questions is yes, then you are in for a treat: Through this instructable I'll take you through the journey of how I made my own bartender robot that uses vacuum to pull custom drinks from the connected bottles, and serve it in units of six.
Hopefully it will show how you can cheaply utilize near vacuum in you own projects by using and modifying readily available products, second hand items and trash. With some simple additional mechatronics the possibilities are endless! Now I've seen some great cocktail and bartender machines already made by other makers out there such as the lovely Bar2D2 and The Manhattan Project and this is by no means a better way to make a bar-bot, but it certainly is a different way and i hope that it as such might be inspiring to some.
Most of the mechatronic solutions to the "robot-bartender" problem seem to use either high pressure and valves to control the fluid serving or peristaltic pump, and I would highly recommend that you do the same if you are looking for a practical and rational way to make a cocktail-mixer. Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson. A lot of this project is assembly and fitting of existing parts and as such a general assortment of hand tools could be required such as Knives, Pliers, saws, hand, wrenches, files and sandpaper. I am an opportunist, by which I mean that I like to use materials that I'am able to easily and cheaply obtain around me and figure projects there after. I design this project the way it is because a friend had bought 12 solenoid valves for his brewery that he was not able to use as they did not work in gravity fed systems, and sold them to me for dirt-cheap.
The only items I had to buy externally was the acrylic sheets, threaded rods, compressor and tubing. The rest was either bought second hand, salvaged or resources I already had available. For a long time I have wanted to make my own version of a bar-bot, and the opening of our new student-bar was the perfect oppertunity to do it.
Being showpiece at a bar for mechanical engineering students, I knew that the solution had to be sligtly original and more importantly: Noisy! Recently I've been working with vacuum infusion of composites, and theres nothing more pleasing than watching the resin making its way through your dry lay-up, seemingly by magic: Vacuum is fun!
One of my favorite takes on the barBot is the elegant Bar2D2 drink mixer, and having acquired enough valves I knew that my solution would be something similar. I figured that a "perfect" aka. Next I made some simple sketches of how I envisioned the body and electronics of the barBot, to make out how much and what components I would need. I Decided to make the chassis in 6 "layers" of 30cm in diameter so that I would be able to fit all parts on two sheets of 60x60cm acrylics, that way it could be easily bought and transported.
DIY Vacuum Chamber for Experiments
Before doing final cuts in the expensive Plexiglass, I cut out the crictical structural parts in mdf and cardboard. The result was a very shaky structure. It was evident that more suport was needed, and I incorperated this before cutting the plastic parts.
It is always a good idea to make prototypes with lower material investment to map out potential problems before they hit, especially when a lot of the "construction" is done on paper and computer-software. It turns out that buyng vacuum pumps in Norway gets really expensive very fast. Wanting to keep the system at the same voltage, I started searching for 12v vacuum pumps online, and turns out its hard to find reasonable ones even from china.
As complete vacuum was not really something I need or even wantI played with the idea of making my own and remembered back to a semi-random instructable i saw some years ago Convert a Tire Inflator-type Air Compressor Into a Vacuum Pump instructables. Some even report them to be able to reach 26inHg, although I've never seen mine above I wont go into too much detail about the vacuum pump as Drcrash covers it well. But there is basically two steps:. It seems like most of the cheap 12v-car tire-inflation compressors are built simmilarly, in that they are just a cheap plastic shell around a small piston-compressor and dc-motor.
Taking it apart should only be a matter of unscrewing a few screws. At this point you could also cut the high-pressure tubes and power cord to a more resonable length. The trick to turning the compressor into a vacuum pump is covering the air inlet-hole and use the suction here to create a "vacuum".
The high pressure line should be left free to. I used a piece of "T"-fitting to cover the inlet hole as it was placed quite tricky on my compressor, and I had to cover most of the top of the comrpessor to create a seal. What you want to end up with is the hose-fitting and compressor around it covered in epoxy glues, so that you know that its air-proof.Pages: . The problem is that it outputs a constant value of around 98 whilst I put the sensor in vacuum chamber and pumped the pressure down to around 20 mbar.
I connected the pins to my Arduino Uno using the analog option in Figure 2. The other pins are not connected. Figure 1 Figure 2 The code I'm using to read these sensors is still very basic I think it's from the tutorial codebecause I wanted to get the sensor to work first: Code: [Select]. You need to look at the range for your Sensor - I expect it is intended to read positive gauge pressure - pressures above and related to atmospheric pressure. Trying to run it below atmospheric pressure vacuumwill most likely not work - as you've seen.
Amateur radio sinceapproximately. Live in Central Oregon desert. Quote from: pylon on Feb 22,pm. Yes, presumably the sensor is a gauge relative rather than absolute pressure sensor, but the data sheet does not seem to make this clear.
Edit: on page 5 where the product code is explained, this is a gage alternate spelling sensor, so pressure at the port is measured relative to atmospheric pressure on the sensor chip. Positive pressures only, as well. OP: you need a completely different type of sensor for a vacuum chamber.
Please state the range of pressures you intend to measure. Quote from: hammy on Feb 22,pm. Quote from: jremington on Feb 23,am. Yep agreeThe Internet has made information previously only accessible at universities available to almost anyone with an internet connection, anyone can study courses and acquire knowledge at a fraction of the cost! But as is often with science and engineering, this is only half of the equation.
The hardware used for professional research is often prohibitively expensive and often custom made, and often when an experiment or project is finished or a grant is received, this perfectly usable hardware is simply discarded.
This Instructable is about recycling and lowering the cost of entry into the fields of high sciences, by reusing discarded or used hardware, and using modern technology and engineering to make it work for a new purpose. To take hardware from different time periods and different manufacturers, and make it all work together as one unit to accomplish the same goal new hardware would, using things like Arduino, 3d printing, and home CNC machining.
After all, we work far too hard as a species to gather this knowledge just to keep it from those who may have interest in it simply because they weren't invited to the party, like me. Knowledge is a human right, and treating it as a commodity is a waste. Other people have done projects like this before of course, but I want to do this as professionally as possible, as if I was doing this in a university setting, so I can learn as much as possible, on a very meager budget.How Does Silicone React In A Vacuum Chamber - TKOR's Silicone In Vacuum Chamber Experiment
Like, super meager. The intent of this is to recycle retired lab gear and parts that are normally thrown away, and all of my files, code, and drawings are made available to be modified and published to further the reach of this project. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
This project is intended for multiple uses, and is designed to be partially modular to enable a variety of experiments to be carried out. The first proof of concept experiment of this system will be a Farnsworth Hirsch Fusor.
This system will be able to achieve a very high level of vacuum capable of making a very functional fusor. The Vacuum chamber's upper window lid will be modular and set up for different experiments, for example, when set up as a fusor there will be a high voltage feedthrough in the upper window lid for the inner grid and gas valves, while having a seperate sputter coater lid that can be quickly exchanged for a different project.
Among many others, a primary use for this project could be for coating glass with metal via the sputtering process to create DIY LCD panels, thin film transistors, or partially silvered and fully silvered first surface mirrors for use in high accuracy laser systems. This ultra high vacuum system utilizes a surplus 4 inch liquid cooled fluid baffle Daia DPF-4z oil diffusion pump and 2 stage rotary vane pump to achieve very high levels of vacuum.
The Diffusion pump is majorly overkill for this project, but it was found for a great deal on ebay, and was impossible to pass up. The Rotary vane pump is a harbor freight special pump, made by US general. It isn't the highest quality pump, but it will be operated relatively rarely, and only used to pump air, and not refrigerants as it was originally intended. A Varian vacuum Ionization gauge was acquired on ebay for a small price in questionable condition, with the intention of repair as sub small project.
Repairing old equipment like this and integrating into your designs are a great way to learn about how to fix electronic devices and engineer your own! However, I ended up using an MKS series inverted magnetron transducer cold cathode ionization gauge mouthful!
The actual vacuum chamber is a CF flanged tube from a larger system also acquired from ebay, but as we do not need a large chamber volume, this small chamber will work perfectly. There is also a cooling system for the pump, various electrical work, an adapter plate that needed to be machined to interface the pump to the standard CF flange chamber.
The most integral part of this system is the high vacuum pump, used to increase vacuum levels farther than typical mechanical means can achieve. A roughing pump, the US General rotary vane pump pulls the initial rough vacuum needed in the chamber and the diffusion pump, and the diffusion pump then activates as the second stage, increasing to the final vacuum level.
This specific diffusion pump operates on the oil diffusion principle for gas molecule removal, by which in the bottom of the diffusion pump, oil is boiled and vapor travels up the chimney, and the vapor is ejected out to capture as many gas molecules as possible, and fired downwards towards the outlet of the pump to carry the gas to the mechanical vacuum pump. Now, we do not want this oil splashing into the main chamber, so there is a liquid cooled baffle used to cool and condense the oil before it can get into the chamber.
To mate this non-standard Japanese pump to the standard CF flange chamber, I needed to engineer an adapter plate out of aluminum. I used a desktop CNC machine to mill out a plate of MIC-6 toolplate to keep a perfectly flat surface, as the o-ring mating surface needs to be perfectly flat, while supporting the weight of the pump and chamber.
The system after being adapted then needs to be mated, the pump head has an o-ring groove for sealing against the bottom of the plate, and the plate has a groove machined to seal against the bottom of the vacuum chamber. High vacuum grease is used to properly seal the o-rings against the mating surfaces. The diffusion pump then had its outlet tube modified to connect to the roughing pump.
This diffusion pump is large, and subsequently liquid cooled, so a water cooling system must be utilized.Pressure cookers make great vacuum chambers because they're readily available, not too expensive, and are strong enough to hold a full vacuum. Once you've found all of the parts, assembly is straightforward and can be a fun afternoon project. For this build, I wanted something robust enough to withstand many uses, and reliable enough to work every time.
It also needed to be as big as possible, because why not? If your needs are more modest you can use a smaller pressure cooker they come in many sizes and maybe use a thinner sheet of acrylic or switch to a polycarbonate. Although, I'd caution you to do a stress analysis before using anything thinner.
Acrylic fails catastrophically, and it's hard to try again while picking plastic out of your eyes. Better safe than sorry. And remember, always wear proper eye protection! Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
I used a Miro quart aluminum pressure cooker, and a Robinair vacuum pump. Both were available from Amazon and reasonably priced, but there are plenty of other sources for each. If your pump has different fittings, you'll need to use the appropriate adapter. This isn't the best choice for this application, but it's all they had, and I only needed it to work once. I found them at a local supply store, but they're generally available online for about the same prices.
I used a cross-fitting as the central fitting in this setup so I would have an extra port for future use. You can just as easily replace the cross with another T-fitting, and use one less ball valve, to save a little money. Fewer fittings means less leakage, and better vacuums, so feel free to remove anything you don't need.
Let's get the easy part out of the way first. For this step, you'll need your bag of fittings, the valves, the pressure gauge, a roll of teflon tape, and a crescent wrench. Assembling brass fittings is pretty easy, but you do have to be careful. Brass is a very soft metal and you can easily strip the threads if you over tighten the fittings. But, at the same time, if you don't tighten them enough, the whole thing will leak. The teflon tape helps seal up the threads with less tightening, but it's not magic.
Don't worry about this too much right now. Just get everything assembled in the right order and we can worry about any leaks later. The fittings go together in the arrangement shown in the picture above. Just assemble the fittings one at a time, in whatever order works for you but start with the pressure gauge, see below.
Vacuum Chamber Cocktail Mixer
Ignore the bullhead fitting, and its associated compression fitting, for now. We'll worry about those in a later step. Make sure you wrap each male thread in at least one layer of teflon before installing.So you need to vent a vacuum chamber? Whether your reason behind doing so is to replace a sample, take out an instrument, or fix a leak this Instructable will lay out the necessary steps behind this process.
Vacuum chambers can be found in most research labs requiring an isolated system. Electron microscopes, material evaporators as is the case in Figure 1and plasma research all need vacuum chambers to acquire quality results.
Venting must be a gradual process to avoid complications such as damaging of equipment, especially from high vacuum torr. Following these steps in order is imperative in order to not contaminate the quality of the vacuum chamber. An example vacuum chamber is included to provide guidance, but your specific setup may vary. It may vary in the number of vacuum pumps, accompanying instruments, and other ways, but these instructions serve as a general guidline as to how to properly vent any vacuum chamber.
Atmospheric oxygen is very reactive and if too much of it enters the chamber during periods of being in atmosphere this can lead to poor conditions. Because of this nitrogen, a cheap and nonreactive molecule, will be used through much of this process as the substance to vent the chamber. Gasseous nitrogen may be used to vent vacuum pumps, but it is best to only vent the actual chamber with liquid nitrogen.
The entire process involves much wait time for filaments to cool and internal pressure to reach equilibrium with the atmosphere. As such, set aside about a full day into your plans for the venting process.
Pressure Cooker Vacuum Chamber
Again, most of this time you need not actively be performing tasks during this time. In terms of the time it takes for you, the actions needed should only take around 45 minutes to an hour and a half net to complete. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
Before you begin, take care that all filaments have been set OFF for a sufficient time overnight or half of the day. This includes all evaporators, ion gauges, and ion pumps. Without doing so, hot filaments can oxidize react with oxygen in the air and be damaged. Figures 2 and 3 show examples of filament controllers that must be turned off for 12 hours before venting. At this point, any vacuum pumps still on must be closed off from the chamber these are NOT filament based, and so are able to be turned off in the presence of atmospheric conditions.
Many pumps require oil and other dirty contaminants that would be a nightmare if they got inside the vacuum chamber. To ensure no suction of these contaminants into the chamber, close off the valves the pumps should be connected to. When this is done, the chamber is totally isolated, with no gasses going in or out. The next goal will be to properly power down the pumps themselves. The vacuum pumps can be contaminated just as the chamber can, and since they are connected to the chamber their contamination could lead to damaging the chamber itself.
As such, it is important to take care in this step to vent the pumps with gaseous nitrogen.He is the author or editor of over a dozen books on technology, DIY, and geek culture.
In this video, the always resourceful Chris Notap shows you how he created a small, tabletop vacuum chamber on the cheap using an old scroll compressor he got from a discarded dehumidifier, some common household items, and a vacuum gauge. You can do fun science experiments to see how things react inside of a vacuum.
With a few basic items, you can build this in less than an afternoon and you can make it with a chamber that is as small or as large as you want. When using a refrigeration compressor, zip-tie a rolled-up piece of sock or material to arrest any oil vapor that may come out.
These compressors work by circulating a small amount of oil through the system, and when used in this manner, it creates a small amount oil vapor. Will usually be one of 2 sizes on the compressors. Use a mason jar, pickle jar, large size jar, flower vase, pretty much any cylindrical glass container will do with a nice flat top edge. Hunt around. The Dollar Store sometimes sells these at a cheap price. So, what can you do with such a vacuum chamber?
Here are a couple of experiments Chris did with his new homemade device:. Latest Gareth Branwyn. By Gareth Branwyn Gareth Branwyn.
Here are a couple of experiments Chris did with his new homemade device: Related Stories from Make:. Send this to a friend Your email Recipient email Send Cancel. Thanks for signing up. Please try again.In this instructable I want to tell you how to make a vacuum chamber and a vacuum pump for this chamber to carry on some crazy experiments! Also I made the videoand at the first half of it I will show some crazy experiments in vacuumand at the next half I will show how to make a pump and a chamber.
And next steps for all who doesn't want to spend an Internet traffic for YouTube :. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
Extend an end of silicon tube with scissors or tweezers. Stock tube is not fit to the syringe's tip. Cut off a necessary piece of tube to connect the T-connector right to the syringes tip with minimal distance between them. Connect both valves to the T with little pieces of tube. They must pass an air in one direction! Disassemble the drop counter and get a plastic part like on the first picture. Drill a hole in the glass's cap and attach drop counter's part into it with hot glue or cold weld.
You can't open you vacuum chamber with vacuum inside, so we need a vacuum release system. And it will be placed on last tube of the second T which is near to the chamber, nor the pump. Press it before pumping, and replace it to release vacuum: a syringe's needle, cutted and filled with glue just a plug. Remove it to release a vacuum. This pump can create a low pressure 0.
I recorded few funny experiments, and you can watch it in this video. So, offer another experiments, which can be realize in that chamber! The blue check valves don't seem to be relyable. That rubber like part just seems to stuck in open position or its piston like part is too soft so it flips over.
Reply 3 years ago. More by the author:. About: I like to create things, handmade weapon, arduino projects, science and some crazy staff! And next steps for all who doesn't want to spend an Internet traffic for YouTube : All you need: A very big ml syringe, it calls the Janet syringe 2x one-way valves 2x T-connectors for tube A drop counter Vacuum release valve probably: letter clip, tiny valve for aquarium systems or syringe's needle A silicon tube A glass with cap.
Add Teacher Note. Put extended tube on syringe's tip and fix it with tape or smth. There are several ways to make it: a silicon aprt of drop counter, squeezed with a letter clip.
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Also you can use this project for school science fair, I think it is worthily! Did you make this project? Share it with us! I Made It! Making of the Baby Cthulhu by twiesner in 3D Printing. Table Saw Class 16, Enrolled. WernerH15 5 weeks ago. Reply Upvote. VajkF 3 years ago. Where did you get those tiny fittings and valves? I must make this immediately!