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2018-05-30 18:01 by Karl Denninger
in Small Business , 81 references
[Comments enabled]  

Naw, you don't need a good link.... Crappy HSPA here, FULLY SECURED video.  Anywhere.  Look to the right, email me, buy it, make a fortune .

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2018-05-28 18:37 by Karl Denninger
in Small Business , 184 references
[Comments enabled]  

Yes, it's real.  No, this isn't some cooked-up demo, or the usual "well it sort of works" half-stable thing either.

On the contrary, the last time the little Pi2 this is running was reset was...

5:14PM up 90 days, 18:47, 1 users, load averages: 0.37, 0.32, 0.26

....which was due to a power failure that lasted longer than the UPS battery did.

The previous downtime?  Same deal.

And by the way, that's on a Pi2 you see below on the back end.  The "3" is a lot faster, but I believe code should run efficiently, not take up all the space and CPU power available to it.  So even though I have a passel of "3"s here I write, test and run on the "2" for my own use because if I'm insanely happy with the performance on the Pi2 then anything faster will be better.

What you're looking at here is the real deal.  Over 150 "events" are on the controller that can and do run the house all on its own.  Thermostat, entirely passive security that knows if someone is here or not and arms and disarms appropriately, cameras, lights, fans, the pool, the hottub, all visible and controllable from anywhere.  The pool gear is on a second instance of the same code slaved to the first, all seamlessly and accessible from the app.

None of it ever touches a cloud machine, nor does a login or password ever get stored on your phone or in your browser.  Cameras?  Now you have secure video from anywhere.  Real-time control of them?  Yep.

Real-time access and knowledge of what's going on, all the time, from anywhere.  Power consumption on your phone to do this with 90 second maximum latency while the phone is sleeping is about 1% over a full night's sleep.

No games, no bull****, no fooling.

One company -- one Small Business, one Homebuilder -- can have this advantage.  No Alexa that Amazon claims was "told" to send a conversation to a random person.  No "cloud."  You keep all the money.  Licensing (including whatever subscription model you want, if any) is secured by SSL certificate; the infrastructure to run both the server and client side is done and in-use now (both a simple flat-file server instance and one that hits a Postgres database are included -- written in "C", of course) -- all that needs to be done is building a billing interface for certificate issuance (which I can do, of course, once the requirements are known.)

There's also an energy management component to this that is likely patentable.  The provisional will be filed before sale and goes with the package.  The whole shooting match, in source, is what you're getting.  No high-level garbage on the server -- it's all in "C".  The Android client is (of course) written in Java.

Want to make 40 times your investment?  100?  500 or more?  The opportunity is right under your nose.  I tired of running a business, which is why I don't today.  Make my lack of desire your opportunity to profit massively.  The ask is very reasonable.

My email is to the right.  You know how to use it.

Thanks to Sarah for letting me borrow her GoPro..... that headgear is pretty odd stuff, but it works smiley

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2018-05-14 14:28 by Karl Denninger
in Small Business , 115 references
[Comments enabled]  

Well, that wasn't all that hard.

I've never previously written a single line of Java, nor developed for Android.  Ported Android itself, yes, but not written apps -- nor used "Android Studio", Google's IDE for it.

A few weeks ago I bought the "Big Nerd Ranch" book on it, and read it.  It's a solid couple inches thick and, if you've never done programming, you'll be lost in the first half-dozen pages.  Figuring out Java at the same time was quite a trick (and one the authors warn against), but being a guy I don't read instructions anyway.


But now Beastie (yes, phk, the beer is on me if we are co-resident somewhere) peeks out the window, and the App lives.


I find some of the admonitions from Google rather amusing.  They really want you to use their cloud message management system rather than exempt your app from their battery sleep/doze stuff, for example.  I understand why, in many cases, but, in this specific case.... nope, nope and nope.  The impact on power consumption?  Nearly unmeasurable over a full night's sleep with the phone unplugged; according to GSAM consumption is about 1% over 8 hours.

A couple of weeks post-sitting down with this monstrosity and there's an app, complete with power management, background networking, preferences and all that.

HomeDaemon-MCP itself (the server/operational piece) has been taught how to do persistent notifications to mobiles as well, which is very nice.  What that means is that if you "miss one" because you're out of range (for example) as soon as you come back into range you'll get the notification.  Ditto if your phone reboots.  This also means that the complexity of said notifications can be infinite, and is subject to user permissions.

Speaking of which that's one of the big deals.  Multiple users with different permission bit masks are fully supported down to an individual device level for both read and write access flags.

I don't know if I prefer the app over the web interface for HomeDaemon-MCP, to be honest.  The app has its advantages on a phone, not the least of which is its persistence and notification capabilities.  That's real nice; what I used to do for notifications was to have the base system send a text message.  That works of course but this is nicer, easier to customize (choose your tone, do you want vibration or just sound, etc) more-granular, and has less risk of getting lost (yes, carriers do lose text messages on a somewhat-regular basis.)

The "about" page can be read here for the app... I think you'll like it.

If you do, and want to pick up the whole package -- including the App -- for marketing and sale of course, the email link is on the right.  No cloud used, security is completely under the owner's control and licensing is done with privately-CA-issued certificates -- which are damn near bomb-proof and enable both buy-once-use-forever models as well as annual or even monthly subscription-type licenses.  You choose.  And yes, the price for the whole shooting match is reasonable.

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2018-04-07 12:26 by Karl Denninger
in Small Business , 113 references
[Comments enabled]  

You might have read this article when I published it originally.

Or, maybe not.

If not, then please do.  It lays out a pretty decent case, I think.

What I've now completed is the majority of the back-end work to make implementing a mobile app a rather trivial piece of coding -- instead of a lot of work.

Let me lay out the how and why for you on this.

The "hard way" to do a mobile app is to have it do all the work.  The easy way, every time, is for the mobile app to be little more than a terminal into something.

But this is a problem in the general sense even when there's a web server included because you then have to parse the web output.  That's somewhat of a pain in the ass.  So what you need to make mobile app development easy is a trivially-parsable reply format, preferably one that updates in real time for you.

HTML5 makes "dynamic updates" pretty easy, which is nice.  You send down a little javascript "listener" and then make a call to a resource that comes back with the MIME type "text/event-stream", and then sends updates.  Each has a tag, which matches that tag in your HTML document.  This connection can be (and should be!) persistent, in that this reduces overhead greatly.

Well, that's nice, but the persistence can be a problem from a resource consumption and management standpoint.  If you're not particularly persistent then the "retry" stanza will reconnect, so many pages and servers do exactly that -- they send the data but then allow the connection to close, relying on the connection cache ("Connection: keep-alive")  to cut down the overhead to something reasonable.  This will give you "every 3-5 seconds" updates -- good enough for most implementations such as social media and messaging.

What you want with an app, however, is an actual dynamic stream that stays open for minutes at a time because otherwise the overhead is a five-alarm pain in the butt.  Implementing true persistence on the server end gives you the ability to push updates as fast as you're willing to burn the CPU to handle.  You can get single-digit millisecond latencies (or better) if you are willing to burn the CPU for it, but getting latencies down into the couple hundred millisecond range, or ten to twenty times faster is an utterly-trivial exercise and actually cuts load since connection renegotiation frequency goes down enormously.

HomeDaemon did the first, until now.  It now has had the web code refactored to implement the second, which means that it is now very easy to add to the web backend a specific calling sequence that will output a table of units with locations, names, types and similar parameters followed by a stream of updates of status with one call that is nothing more than a glorified "GET" instance, and key it all off a given security level to match the user's privilege set.  Since SSL is in play the call (with authentication) and reply, plus the data stream that comes is secure.  And since the lifetime of a connection is now minutes where after the initial burst updates of status take just a few tens of bytes the overhead becomes extremely small -- which is fabulous both for data and power consumption on a handheld.

So there's no app for Android -- yet.  But the predicate for the back-end support for one is now 80% complete with the other 20% in process.  Yeah, implementing that was a five-alarm pain in the ass -- but now it's done.

After the back end is complete, along with the calling sequence, I'm going to teach myself how to write Android apps.

And yeah, somewhere between now and the endpoint of that the asking price is going to go way up for all the obvious reasons, so if you believe in the "MAGA" stuff and want to prove me wrong then get rich at the same time -- read this article again, then contact me.

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2018-01-12 11:35 by Karl Denninger
in Small Business , 94 references
[Comments enabled]  

So what sort of practical applications does a HomeDaemon-MCP installation have -- and why would you, if you're a small business (perhaps in the homebuilder, HVAC, security or renovation space) want to buy the package and monetize it?

For the math on a plausible basis look here.

I want to focus right now, however, on the practical side of it -- the user experience side.

These are all things I'm doing right now in one way or another in my home.  If you've got a serious interest in acquiring the package I'll be more than happy to meet with you and show you -- from afar -- exactly what I'm talking about and how easy it really is.

  • You're at the bar, a half-hour from the house.  You'd like to use the hottub when you get home.  So you open the page (on your phone) and hit "Hottub On." You can see the current temperature of the water and a few minutes later you get a text message that the heater has been confirmed to be working; when you get home you pop right in.  Behind the scenes the system has reset the valves on your combined pool/hottub system, put your VFD-driven pool pump (which you have saved several hundred dollars a year in power by installing) on "high" for the hottub, and monitored the heater's temperature rise to make sure it ignited.

  • You get out of the hottub, having enjoyed several adult beverages, and forget to push the button to shut it off.  30 minutes later, sensing no movement in your Lanai, the system does it for you saving your a scadload of energy you would have otherwise wasted heating the water all through the overnight hours with nobody in it.

  • You have your laundry machines in the utility room.  You stick a load of laundry in the washer.  When the washer finishes the cycle the system notifies you that the load is complete via both announcement on the house's speakers (over which it can also play music) and via text message, just in case you happen to be out working in the yard or relaxing by your pool.  Contrast this with the washing machine down in the basement or in the utility room and it's "weak sauce" end-of-cycle buzzer you cannot hear.  Ever leave a wet load in the washer by accident overnight this way?  Yeah, that's disgusting..... 

  • You leave the house, getting in your car.  An hour later the house automatically adjusts down the A/C, saving your money, it texts you so that you know it went into the "secure" mode and in addition it starts monitoring the occupancy sensors to indicate not that someone is in a room but that someone may have broken in!  If it detects same it takes a picture through your webcams and sends it to your phone via email, and texts you immediately.  Instead of having a contract with a security company and getting fined by your local PD for false alarms if the sensors trigger you get to check it out and, if there really is a problem you can call the sheriff's department directly.  No more false alarm charges and a higher-level of security, plus good photographic evidence to use in prosecuting any actual burglar, is the result.  Oh, did I mention no "monthly fee" games from the security company either?

  • You get home later, and the system detects you coming in through the garage door; it shuts off the security and returns the A/C to its former setting.  The occupancy sensors go back to turning your lights on and off for you automatically, without any user intervention.  Just to make sure it really was you the system also sends you a brief text message so you know the house has turned off it's "secure" mode.

  • You aren't around for a weekend.  The system, being in "away" mode automatically, runs a reasonable simulation of an occupied dwelling, with a pattern of lighting suggesting someone is there -- during the evening hours only, of course.  When someone unexpectedly comes into the driveway the floodlights all around the home come on, perhaps providing a deterrent value should that be a burglar.

  • You have a room with two lighting switches but when one is on you really would like the other to be on or off at the same time -- and at the same brightness.  You declare these as "grouped" in the system; pressing the paddle on one (whether on, off or to change the dim level) causes the other(s) to automatically follow.  You can also "group" a switch (e.g. when you have a light on you want the ceiling fan to be on, and if you shut off the light then the fan should be shut off as well) with a dimmer circuit.

  • You go to bed, and push a button on your nightstand.  All the lights in the house go out and the HVAC system is adjusted to your preference for a more-comfortable sleep.  The outside perimeter motion sensors, should they be triggered during that overnight, will turn on the respective floodlights and, if motion is detected in your lanai, not only will all the lights be turned up fully there but a chime and announcement will sound inside.  Home invaders who think they'll catch you sleeping beware!

  • You wake up a couple of hours earlier than normal and decide you're going to get up, which is unusual for you.  You like to sleep in a cool house, so when you went to bed you had the system turn down the heat -- and it's February.  You reach over to the nightstand and press button "3" briefly (of 4 on the wireless remote you have velcro'd to the side of your nightstand.)  The thermostat on the other side of the house is immediately set to it's normal daytime level plus two degrees and your two-stage furnace comes on, quickly warming up the house.  In a few minutes, instead of getting out of bed in a 65 degree house and walking out to the thermostat to turn it up, you have a nice toasty room in which to work your way to the bathroom and your morning shower.  An hour later the thermostat resets back to the normal daytime temperature setting all on its own; no point in wasting energy keeping the house extra-warm for the rest of the day.

  • You have installed a "push button" deadbolt so your kid can come home from school without having to carry a key.  When you go to bed and everyone is home the keypad on the deadbolt is automatically disabled, so even if your kid is foolish enough to tell someone what the code is it's worthless to use in invading your home in the middle of the night.  In the morning the keypad is automatically re-enabled.

  • Your cleaning lady uses the code to get into the house.  You're reasonably ok with this because you can connect to your security cameras and see what's going on at any point in time, plus motion triggers them to take pictures.  The cleaning lady only comes on Wednesdays between 10:00 and Noon; the system sets that code at 9:45 AM on Wednesday and revokes it at 2:00 PM.  The rest of the time your kid can use his code to get into the house after school, but the cleaning lady's code is worthless.  Being in secure mode when she shows up you get a text, and another when she keys the code to lock the door on the way out.  If she doesn't use the code the second time to lock the door (she forgets when she's leaving) an hour after she leaves you get a text telling you the house has "re-armed" itself automatically and the door is locked -- on its own.

  • Your kid, like most, refuses to shut the lights off when he leaves a room.  The system automatically turns them on and off for him.

  • You want to watch a movie and would like the living room lights on, but at a very low level.  You push a button on your phone and they all change to "nightlight" level illumination, along with modifying the light level in the nearby hallway and kitchen on motion detected in the area so your movie doesn't get interrupted with bright lighting when your kid decides to come into the adjacent kitchen and get a soda from the fridge.
  • You want a very low level for the lights in your bathroom at 2:00 AM if you need to get up to pee, but in the evening you'd like a moderately higher level of lighting - and your wife wants to be able to crank it up when doing her makeup.  All automatic; if you get up to pee at 2:00 AM you get a "nightlight" level of illumination sufficient to make sure you don't try to sit down on an up toilet seat, but during the day and evening hours the level of illumination is altered appropriately.

None of this requires "programming" as you think of it.  The list of what to do and when to do them is controlled by a simple English-like language, similar to this:

[z Front Door Motion] triggered on
[v Night]
cmd zset 50 Front Door Lights

Which says "if the front door motion detector just changed state to on and it's nighttime then set the front door lights to 50% brightness."

The system can handle, and will process, a nearly-unlimited number of conditions like this.

The best part of it is that other than for licensing restrictions (if whoever winds up owning this wishes to sell a time-limited right to use, much like Adobe does with their "Creative Suite") there is no connection required to any sort of "cloud resource" of any kind.  The system runs entirely independently, on the local device and yet maintains a security model that allows you, and only you and those you authorize, to access it via any web browser-capable device from anywhere.  Your phone, your tablet, the computer at your office, your laptop -- literally anywhere, all securely and under your exclusive control.  You can also define a number of access levels for that information so some people (e.g. your kid) can control things in his room but he can't screw with the light levels in your room.

Oh, and it all runs on a $35 computer without even getting it to breathe hard and boots off an SD-card, making it entirely power-fail safe.  Power consumption is roughly 5 (yes, five) watts.  Yank the cord and when you plug it back in it comes right back up as if nothing had happened.

Look to the right if the opportunity sounds juicy to you!

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