Make a super simple barometer form a beer can and beans tin.

I am a 1st year student at Huddersfield University (studying software development) and being a student I am both skint and up to my elbows in trash (lazy flatmates never clear up after themselves!). So I though I`d combine weather and trash utilisation in one simple project.

There are simpler designs for barometers (though not much simpler it must be said). But this I think is effective, although quite vulnerable to temperature fluctuations, but if you keep it indoors it should be okay.

Here is the result (see image), apologies for the poor quality photo`s, rubbish camera and poor lighting I`m afraid. I will do my best to supplement poor pictures with hand drawn graphics where required.

Although everything featured in this instructable is found around the common household it doesn`t make it safe. Beware of sharp edges from opened tins, never allow minors to work with sharp objects. Keep Away from electrical items! It may spill, water is used in this project after all, and yes, keyboards are electrical items. I accept no responsibility for injuries or damage caused by this instructable, although the probability of any injury/damage is slight, to say the least.

This is my first instructable so please, lots of feed back (if you have any, that it) and don`t hold back on the comments, whatever you do, don`t `go easy` on me, nobody ever learns anything from that, thanks.


Step 1:

fill it like a hummingbird feeder; fill the beer can normal side up, put the empty tin can over beer can, flip quickly and the fluid should fill the base
fill it like a hummingbird feeder; fill the beer can normal side up, put the empty tin can over beer can, flip quickly and the fluid should fill the base
To make filling the beer can easier, poke a little hole in the beer can , then plug it once water equilibrium is reached, this prevents glugging.
A few suggestions -<br><br>If you paint the inside of the bean can with a rustproof paint, it should help prevent rust forming. Beer tins here are aluminum, and won't rust. Or, you could try using a plastic water bottle in place of the beer tin.<br><br>Instead of using pure vegetable oil for the working fluid, just add a few drops to form a layer on top of the water to reduce evaporation losses.<br><br>Distilled or boiled water might help reduce the growth of micro-organisms in the water. You could also add some water purification tablets to keep the growth in check.<br><br>Most of the bean cans I've seen have ridges on the side, so the rubber band idea wouldn't work on them.<br><br>As far as being affected by altitude, most barometers are. In fact, most altimeters are just modified barometers.<br><br>Nice 'ible, and a great idea.
A BEERometer! I LOVE&nbsp;IT!<br /> <br /> Oh yeah... CHEERS!<br />
mine works this way... if it is hot I drink more beer, if it is cold I drink less beer. more empty cans at the end of the day means it was hot, less means it was cold!
Just wondering if using a light vegetable oil instead of water might lessen the effects of evaporation?<br />
Good point, why didn't I think of that : ) ? I'd Imagine that not only would it get rid of the evaporation problem, but it would also perform better that water because it would not attack the containers causing them to rust like water does, and it will be less prone to bacterial build-up. Great idea, <br /> Thanks,<br /> Drew<br /> <br /> P.s. does vegetable oil freeze at a higher temperature than water? I'm fairly sure I've had some olive oil freeze up in the winter (kitchen had no heating)... Even so, I'm fairly sure it wouldn't freeze up provided temperatures above 5/10c.<br />
I think it does just slightly, although there seems to be little information on the exact freezing point, consensus seems to put it around 39 degrees F, (water being 32 F). However.. bio-diesel enthusiasts seem to prefer rapeseed or canola, peanut, corn or cottonseed oil, especially in *food grade* form, which is somewhat winterized to prevent clouding when refrigerated which makes it less appealing to consumers. I'd just put your olive oil in the fridge and see how it does.<br /> <br /> -Also, I used wide rubber bands (on the bottom) too help keep the inner can aligned. The oil acts as a lubricant on the rubber/metal so you can get a nice fit without impeding movement. On the top of the inner can I used electrical tape with a few layers of Teflon for the same reason.<br /> <br /> Great&nbsp; Beer-o-meter though, Thanks!<br />
That's another good idea...alignment was always an issue but water didn't work well with transparent tape (it was all I had to hand). <br /> <br /> Please feel free to write an Instructable covering your new improved design if you like :) alternatively I can set you as a collaborator on this Instructable if you'd be willing to insert some notes of your own. <br /> Thanks,<br /> Drew<br />
kewl its the first beerometer ive ever seen ;)
This was a perfect barometer from thrash
I don't know if you thought about it when you made it; but the temperature and altitude will effect it. if you have put this in you garden; it's best to have it with a thermometer. thanks
Quite right, also the reactions of the iron (in a steel tin) and any kind of bacteria in the water (inevitable over a few days) are liable to have a strong effect. All that I can recommend is trying to use plastic/aluminum containers and put a large quantity of salt or other (preferably non toxic) anti bacterial agent in the water. I assume sufficient levels of salt or sugar, alkeli or acid (baking soda, vinegar?) would be sufficient to stave off significant effects, for a while at least. More information, if anyone has it, would be much appreciated. Thanks, Drew
should point out that the standard atmospheric pressure is 760 mmHg (torr)
Very nice Instructable! Creative, functional and... Okay. Creative and functional! :)
Nice, this is the flip-side of the thermometer I posted * - that can be affected by air-pressure, this can be affected by temperature.<br/><br/><ul class="curly"><li><a href="https://www.instructables.com/id/EJVCYWU04GEWZMIY80/">https://www.instructables.com/id/EJVCYWU04GEWZMIY80/</a></li></ul>
Very creative and very cool indeed.

About This Instructable




Bio: Andrew is a software engineer by trade and prefers projects that are simple yet effective. Andrew's areas of interest include software systems that do ... More »
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