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Using asyncio (aka Tulip) for home automation

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OK I'd like to introduce you to the last years to come and kind Google is currently 1 of our park on UK guys and 2 months time that may be different because he comes from Scotland
and in contrast to Germany which has unified we seem to be possibly the constructing a new so after that we may call it the dis United Kingdom carry on but ones yes
or no the sooner mysteriously to material
things and is just an underlying I live in Boston and I am not a developer right that's where I work on and of this axis of day-to-day and and that's my Twitter is do what is your rather than on the um yeah that's my my idea of adverse things as well but this validation of the use of the like us I put it mind some members on for around 6 months and often things and so so to talk about home automation of us of defining what it is about automation interestingly the things I find something to do and I found what is it into 3 different categories the first one monitoring like what's happening now in my house on wall and was temperature that how much electricity amazing right now and the next 1 is historical data so this is sort of like most of the time and have led to find friends 1 some then adapting and this will take a little longer to pay off the last probably we don't have enough data yet because the seasons change things so much and time and how users behave element in lost one's pretty obvious is controlling so like I wanted to know what's on something off i want to filter out of house of his overnight because I'm not going to be using the TV you mean like between 2 AM and 6 AM was something over term and even just all things using the power standby suspended with of injury and therefore was set up of this of the brains of operational moment is arrested by the average of all the world like I'm going to move to just for a bit more speed essentially um and then the use of the whole communication of using a device from mechanical operates com which is our Terex or effects radio transceiver signs at full sending receiving and and to communicate between those devices is a radio otherwise no 1903 uh and 1 of these is primarily into this is how many companies may devices which 1 on this and frequency and colonize the 2nd figure that have school bunch of other things but so far as to avoid it and I might look into 200 because it's going to but for now it's not really my moderator afterward and sagittal primitive through the devices only see what they are this is what the the
actual ready things like that this is not particularly attractive but it works well and it's is a supervisor what they want to the USB so you can you see that in the library at the end of and I I was told that the only thing I have issues I live in like over the old house and underlying 19 hundreds of 720 sufficient and some told reporters signals but otherwise this review than full
and electricity by using this from the foreground and they make response which is the LCM once the and basically these little clip on the left that you can attach to the key words fuel electricity meters and then every minute it sends out by the which is called like Procomm what's the total what's the um and then you can just pick up and of the randomly but and you can display that it's it's kind of it's more expensive display side if you actually quite serious about some of the stuff I regret not getting eigen originally because I wasn't sure that it borders project so I wanted to be able to see the data someone because otherwise it useful so it is something the radio waves
and then to humidity In this example boring in terms of the devices and updates every minute again so roughly and it suggests that cell attention humility of where you left of this scattered around my house so you can start to have use own rooms uh and and then
suddenly switches from funding for what we are these are just remotely controllable station time I the 1 thing estimated clear and so the the electricity readings and the tension the ability of the transmit only you know they basically send a message and assume somebody's the receiver with the switches and sockets they'll receive only on so you kind of have to send something to the effect you and the way it works is you couldn't aligning word you send the command of an idea may remember the idea that if you said again idea they will they will listen to and so you
have this different give you an idea of how well how the moments of the data looks like this is an example of how the coming from 1 of the octaves devices and I'm going to introduce the fairly quickly because it's so had lot interesting but in 1 area and I would have liked not really understand what using it'll all like hello what underneath sizes that's a maternity quickly that and so this is a is making my pocket and and this this of a similar standard for somebody very after the 1st 4 bytes so the 1st point in the price level tell you there's a 17 like packets so the length of the path the by excluding the 1st point of 5 8 is the surface effects for the of the list of the family of devices on noticed in water and then 0 1 tells me that it's a specific out and then after that I can vary depending on the 1st 3 years of things you have to really look into the spent and that's quite hot the hands on on the the guy who makes the and they our friends from you can get the so the yesterday because side and and the words that you can actually give out there the yesterday to everyone else this reason being is he doesn't want anyone to ask questions there's no real program and regional of knowledge to support this thing basically to of and yet and want to know and shows the actual extracted data from the packets of the this the idea total what's the poor what's his must be slightly from that there's other things like battery level but it yeah that something that's interesting data and with the system like this would basically the whole thing is like an event stream and this just having all the time but you just have to use of reactors what was going on so some of these are like in covariance or so the lights is like an outgoing thing I'm sending them messages Hamiltonian alive and I get readings from a real as of Malta 1 room and so on and that not used to images continues over an hour of and so that's best kind what drew me to something like this a kind of a logic families an event opponent something work reactant events and let in the form of much to me and that I want to play with new stuff so that's what you have only to a singular and no so you want to that of the but this is how the 2nd augmentation describes isn't there was quite possibly the find that varies description is kind of unless you are already familiar with a lot of the internal terminology it's really it's kind of confusing and then you put on a talk earlier this week and he went along more detail and so the variance is actually the titles of G until but you and a lot more detail about event which and how some basic what's so if you want to really understand that no 1 will doubt you should watch the elders or simply told by greed 1 1 racing Caswell misspelling you so this is not a huge amount of evidence that there some differences but but basically by means of the the gun really dumb down version of water that with this is the factories sorry which for and dispatches events and then calls appropriate wonderful and and just some the formulas this because 1 of things not a single as quite 3 different levels of self-harm hands of diffuse using Python 3 moment solvent and what the effect of this sustainable and to be a hand up if you have to use a single what's that as spoiler half pipe 3 people so you all know 3 for right and yes so this list current this possible example here is this kind of dumb example but this just like in right there's no nothing so non-standard here this is amazing Correa told and 1 of the things agreed on yourself pushing for is that the same the courage to just we want life and when suppressing out so I can prove this fact by going to the documentation taking 1 of the basic are examples removed all the basic special bits and the knowledge of what's like the normal the normal curve and so this is loaded is where we've got function which calls out to an expensive can he function and then we will get results that so just to turn that into like a non-blocking operations it is stated to a few minor adjustments so you'll see here that we but so it goes decorate each function and then when calling the expensive so it will contribute when called the sleeping using you from so basically when that happens we suspend the current so will go into print will get to the results and when it yields to compute that will then be suspended and then we're going to make a few from then is suspended when it gets to sleep and kind of moves up and down the 2nd hands-on descriptors get back again so you can see the difference because really it's so small that there really was so apart from the decorator of the the yield from and then is a little bit down at the bottom which takes off the development which is kind of having but you only really dutifully once perhaps and you can use multiple language that's fairly advantages and suddenly want something is a little bit more relevant to what we're doing and we have underestimated devices and because of this the causal stuff but the article like a web cam which you can use axis of the network use make a request to the URL grab the image and then store and why introduce wanted recent image just on that I'm having to go the point so I don't think every 5 seconds I just have 1 is so when I want to give you a lasting a finite overlaid on every page I wanna like an reasoning images to show and someone browsing a website which our culture which result in an yes so basically when using here I'm using this space encourages ontological TTP which is like obvious Cairo requests close essentially and then there's no single library of which again is just like a and a security and right right and this is actually 1 of the main points that I find working with this encourages some we have to start looking for libraries to support the the primary particles
in the way that it's working so you gotta carry rethink things like use only that it's a really small standard library or sorry not standard library in a real small ecosystem of things you can use the wind and water but again if you read this function you will find that it's really 1st report to read so you know the true decorator and yield from it's a simple procedural code which would otherwise and what is normal but instead is based on yielding to Ukraine connection yielding to uh downloading the image and then you to the right subtle animals and then it just repeats every 5 seconds on just pulling down image every 5 seconds I got stolen radius which is million and although I actually stopped using this approach is something that is messing around with that affiliation demonstrate quite well there's a bunch of libraries are useful and the main result from a disaster I don't want to write a essay Cardinal private 5 seconds individual benefit but so but not things come his own but this is not a bad based on their library for working with the the right advice is something that I've been writing and there are other Python libraries for working with the Our phospholamban learning model is assigned libraries and so 1 uses twisted and I think there actually done a reasonable abstraction for the transfer of particles like going think about edges a difference of transport for and but the some of the color choices I can objected to so I decided to run my own a cell are arranged when it is not surprising areas and they haven't since I wrote this myself is fairly new and is currently limited to devices icicle plot and is working fairly well in and out of his with a lot of help me out with so the problem was founded when I go into the cells new chasing coronary have almost right away into the the collective scholars like the the very simple model and this this this kind of ugly easily in this particular freely fairly simple so I obviously set of transformed passing the still device I want to read and the development of running on and then the call by phone to articles and what's going on but it just doesn't it is really a very elegant and this is this is sort of a bunch of pitfalls recall what's front of the biggest 1 really is if it breaks out of the standard Python on development for I'm still working on a better solution for this and if there's anyone that's like familiar with a single are then I would also help the the problem is that some of the energy these are restricted to call but so I used the the little function for calling the file descriptors and physical what's to somehow go from I want I want school but when I can read the US device that I want to move to this is the generators of futures and I find that the um so this is another example this is something about you find quite useful with you from as you can be more explicit about how you so that when yields to the events allows you to do a combination of blocking and nonblocking operations so this is actually kind of and which is just copied and then reduced down a bit from the card because well I'm doing the set of of the the reader device and need to reset it and then away period time understand this status partly to check that it's of the ready and then he had a tiny strong into social work right so I wanted to be more blocking the way I was doing it but then after was I wanted to not be people so it can to switch the using the you from where I sit knowledge from which is how I enable and disable different particles and I am not sure how you do something this is a key event we want to have a mixture of things when you call them so the you have so for that's kind of what the data collection and working and with that kind of thing with the actual physical devices and then presenting the the results on the Dutch for that reason so it's a fairly simple level and this is kind of side to the the this event interesting talks on practical skip over this fairly quickly and these predecessor felt maybe strapped on and basically it's just a way of viewing the status of the profits or of a like a summer simple time series which are implemented over that turned out to be mistaken a to write your and and all code for this is on the right to help answer the intellectuals was to tighten in applying it that candidate is reflect is kind of like the Dutch police be 1 and play area and so these things are hostile to make more reusable stuff which is tested and I'm not just terrible you don't really you no yeah that's kind 1 was never is just yeah it doesn't just for the the market doesn't use of hospital which is try it and use a single response and yeah so this is kind of the results of once in so this is just like the the default view which shows you the on the 24 hour period of what's going on in my house and I kind of cut out to remove some of the sample size of emotion but you can get an idea so that's like the ultras users aggregated of the day and at the top and then there's this other current readings of Boston and see if you can see there's something like 1 of them's internal you want carefully huge spikes and the the 1 I tried to get down as low as possible beginning as a survival period where was sleeping 0 1 on the house and that's really when he was still of energy of the time just because this stuff in you so that things are happening you know that to take advantage of it and just to show another graphic of the this is Tunisian century it was in my lounges on when went when we had a really hot period we do have an material and lots on and as they often comes around the sum right into the living room and just you to that the temperature of we have cited
some utilities and the lessons of the landing with this project and I'm finding is encouraged pronounced to work with a bit of quite level this is 1 of the actual point so that they will have the ideas to have further abstractions added on top of some sort of agreement once it was his polygamous Fulton and that might be fair ports by 3 I don't have a clue you do about useful that's not on the Council at some point the ecosystem young the is quite is quite tricky doing things is not a huge amount of examples of documentation or so when you will analyze current tricky and most people are doing a building like services all they're doing I guess network traffic and this is not really anyone else life founding socio devices or missing around with these particularly so if you go looking for examples and the out of deconfined have described websites as find that you do so this doesn't really the popular with point proposal from and yet and the other so the key thing is I should have used graphite and for my my data collection and writing your readers time series is actually fairly easy there's just a bit of a pain in the ass is the ornament in and the and reason I didn't I was just being really lazy about thinking something was something running such studies inciting dated and approach presents can slowly moved the and readers or pilot you still amusing there the I think of can touch some of the things that the the proteins and features is something that the when you work with and you want to work with and so there was some examples later protein called while will base of the difference between the 2 and the the problem with the same with the guys is is it's hard to know how you can use coalescent features land the documentation is procedure defining call what's the contribution Newton's metric and next set of memories about everything from the sort I went through a little quick but yet evidence in questions of has some
have any questions OK it's just a just a quick question what sort of money is involved in these incidents of public health and 100 falls in the house of furious I like actually don't find I think if you install devices environment they're pretty easy to apply and members in the distance you know it was compatible which is probably why I want to list of beginning and BAT does expensive what what is of 1 of these so expensive obvious on different not saving money by trying them out to see it here and now OK so the question is well on additional devices monitoring gas consumption so this is this is kind of all this is why this is an area of town respect for and this actually is defined how will work by from find anyone selling so our intro think of creative ways to do this only option thought of as a webcam and OCR and the number of the that's the thing that I I I you and so on the internet and see you want have still plots you comparing and about security of all us only socket driver final switch everything perhaps it is a theory you could do some of that these are the ranges in the library only on the devices yes so outside and you listen to the practice I was sending and then you you just need to take the ideas and the attendance all of you wouldn't know what on and necessarily about the kind of kind of funds and there what's the last week and often and that I have 1 of my friends is isn't a similar thing to do and then the genesis of those considering going around like just like Singapore occupied what battery pack and things to the correlations sources yes it and then given that this talk has been lasting domains Internet will be available on each you didn't have any concerns that I thought I don't think I put in my address have had had good point good thank you very I what about high-level web frameworks and I think I can have you know if anybody's doing any work column doing that sort of thing in empire Muslim and if there's anything is particularly difficult about that I I don't know in advance but I did fall I think this somebody's gonna hold lost and beta seem like a like those already feel like a learning bunches of as a web developer all this kind of points and stuff that they belong to me and stuff like everyone lot and then I started looking at uh Mexico what framework options and I like right on time for this site is 1 with the the fast approach which is into simpler and they are actually kind of regression and away because I than in the right framework on top of what's going on so ideally what want is amazing progress framework because I can just give you I'll just be 1 they use says something about the gas meter reading just now have an idea of the camera the webcam and no fewer against also from the 20 thing you probably had to fly but usually these meters south like an infrared uh be thankful for every cubic meter of this and so you can look into that cobalt look at the 1 extra job is like DM outside of sizes like whether considerations but are afraid their love of the context the do you have any support for like motion sensors they and so there is the company that makes the switches and sockets they've also got actually was people about possible from the same company the PIR sensors and I'm I'm not a huge amount of them yet so that's still can work in progress but yet you saw that it might be the 1 thing I was in the hallway and turning on the light when it's in the dark and so if your life solution and wants to run for you that as many microphones within the future thank you will thank you to the last thing in the testing of the the number of questions there if you will the whatever Chinese frightened to share in which technologies would you will have a choice for 1 of the library yes I divided into 7 hours problem with this and simply because they have got serial support and included in the you twisted to standard library of analytical and some additional is you and I I and having to defend figure out stuff there which I wasn't too familiar this into a student a choice of ways that he provides an interesting accidentally you apply some users will have their hands is over 90 minutes you have available to try my photos of this is on the hopes of the effort of everyone and because it is the thank you and tells
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Metadaten

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Titel Using asyncio (aka Tulip) for home automation
Serientitel EuroPython 2014
Teil 38
Anzahl der Teile 120
Autor Matthews, Dougal
Lizenz CC-Namensnennung 3.0 Unported:
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DOI 10.5446/19965
Herausgeber EuroPython
Erscheinungsjahr 2014
Sprache Englisch
Produktionsort Berlin

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Fachgebiet Informatik
Abstract Dougal Matthews - Using asyncio (aka Tulip) for home automation This talk will cover the new asyncio library in Python 3.4 (also known as Tulip) and will use the area of home automation as a case study to explore its features. This talk will be based on code using Python 3.3+. Home automation is a growing area and the number of devices and potential applications is huge. From monitoring electricity usage to the temperature inside or outside your house to remote control of lights and other appliances the options are almost endless. However, managing and monitoring these devices is typically a problem that works best with event driven applications. This is where asnycio comes in, it was originally proposed in PEP 3156 by our BDFL, Guido van Rossum. Asyncio aims to bring a clear approach to the python ecosystem and borrows from a number of existing solutions to come up with something clean and modern for the Python stdlib. ----- This talk will cover the new asyncio library in Python 3.4 (also known as Tulip) and will use the area of home automation as a case study to explore its features. This talk will be based on code using Python 3.3+. Home automation is a growing area and the number of devices and potential applications is huge. From monitoring electricity usage to the temperature inside or outside your house to remote control of lights and other appliances the options are almost endless. However, managing and monitoring these devices is typically a problem that works best with event driven applications. This is where asnycio comes in, it was originally proposed in PEP 3156 by our BDFL, Guido van Rossum. Asyncio aims to bring a clear approach to the python ecosystem and borrows from a number of existing solutions to come up with something clean and modern for the Python stdlib. This talk will introduce asyncio and use it within the context of home automation and dealing with multiple event driven devices. Therefore we will cover asyncio and the lessions learned from using different devices in this context. Some of the devices that will be used include: - Raspberry Pi - RFXCom's RFXtrx, USB serial tranciever. - Owl CM160 electricity tracker. - Oregon scientific thermometers. - Foscam IP cameras. This talk will also briefly cover the previous solution I used which was developed with Twisted and compare it briefly with my new code using asyncio.
Schlagwörter EuroPython Conference
EP 2014
EuroPython 2014

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