Getting Started with Open. HAB Home Automation on Raspberry Pimake- use- of- logologo- backgroundsearchsearch- startcloseemailbookmarkfacebookgooglepintereststumbleuponwhatsappamazonyoutubeyoutubelabel- rectangletriangle- longdown. Advertisement. Open. HAB is a mature, open source home automation platform that runs on a variety of hardware and is protocol agnostic, meaning it can connect to nearly. Feel free to share it with your friends and family.
The first part of this guide focuses specifically on how to get Open. HAB. Everything else is optional. If you have no need of Z- Wave, you can safely ignore this warning and go ahead with a Raspberry Pi model B or B+, because everything else seems to work fine. You can always upgrade to the latest Pi if and when you do add Z- Wave.
This little thing can be the best smart home hub you. Version 2 is also currently available as a very early alpha preview, but adopts a dramatically different architecture to the Open. HAB 1 series: this guide is not compatible with version 2. I strongly suggest you follow this guide through slowly and methodically . I suggest you work headless on the RPi .
Get your network cable plugged in, then boot up, and navigate through SSH. Run: sudo raspi- config. Expand the filesystem; and from the advanced menu, change the memory split to 1. We need to fix that with the following commands. R openhab: openhab /etc/openhab. R openhab: openhab /usr/share/openhab. Next, we. We finally need to set a Samba password for the openhab user: sudo smbpasswd - a openhab.
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I. It might not be auto- discovered on a Mac; but you can use the Finder - > Go - > Connect to Server and the addresssmb: //openhab@raspberrypi. Authenticate with username openhab and your chosen password, then open up both your shares to have a look around. You should even be able to open http: //raspberrypi. Open raspberrypi.
It. For now, we just needed to know it. A sitemap describes the user interface . Every part of it is completely customizable. To have a look at how this one has been created, open up the sitemaps/demo. Open. HAB Config share. It. Again, looks scary, but this is where you create items to control and define sensors to track.
So How Does Open. HAB Work? Now that you. Each item can be named, assigned multiple groups (or none), and connected to specific binding.
I spent a long time trying to work out why my . You can control precisely how you want the buttons laid out and information presented. You could define top level groups for each room of your house; clicking on each would show you a list of every device in that room.
Or you might prefer to show groups for each type of device: a button for lights, another for electrical outlets. There might be some devices you use so often that you just want a switch for them right on the home screen. Rules. Simple events like turning on the bedroom lights at 1. By default, Open. HAB is only going to show the current state of something; if you want to track that value over time, you need to setup a persistence definition for that data source.
For instance, the humidex. You can have multiple sitemaps and items, so you can keep the demo content and refer back to it at any time, or try out a new layout for your home control interface. Each one will introduce some core concepts such as how to install bindings and item definitions, so I. Open up home. sitemap and paste in the following code. This just acts as a basic skeleton to which we. To enable this mode, open up the Open.
HAB Config shared folder, and edit the logback. On line 4. 0, change the following line to read DEBUG instead of INFO.
Is the Hue any different? We find out. Read More. At the time of writing, there. Browse to the configurations folder and make a copy of openhab- default.
Open that up, search for HUE. The only thing you need to change is the IP value of.
The secret value doesn. By default, the line specifying the IP address of the bridge is disabled (or technically, . Like any third party Hue application, you. Other lights may just be a Switch. Next is the codename of the item: I chose Bedroom.
The codename should have no spaces. Between the quote marks is the label. Ours is simple in this case, but for some items like temperature or something that reports a value, you. Just specify the base icon name. In this case, the hue binding, and the number of the bulb is 1. You can find the number by opening up the official Hue application and looking at the lights tab.
Each bulb has a unique number. I. Now we have the devices added, but opening up http: //raspberrypi.
Open up home. sitemap. The code used to describe the interface is different to items, but for now we. For now, this will suffice. Save and reload your home sitemap in the browser. You should see this (or, whatever groups you. Unfortunately, it doesn. As a bonus, the My.
Open. HAB service also has an IFTTT channel, giving you infinite possibilities for remote control and automation. First: install the binding. Quick tip: if you don. Check under the Open.
HAB Home share - > webapps - > static and you should find a UUID file containing your unique identifier. Typejava - versionto check. Oddly, the latest version of Raspbian. Bonus: Oracle Java 8 is faster than the default Open. JDK! Now you should also find a secret file in the webapps/static folder.
Open both the secret and uuid, and be ready to copy paste. Now go create a My. Open. HAB account, using those details, then come back. First, we need to set the default persistence engine to myopenhab (persistence is something for a later guide, but regardless, we need to set up something basic in order to . To do this, open up openhab. Save. Lastly, create a new file in the configurations/persistence folder called myopenhab. Strategies . Also note that until your items have changed at least once, they won.
Congratulations, you now have complete IFTTT access to everything in your Open. HAB system! Bluetooth Presence Sensor using RESTA short while ago I showed you how to make an automatic office door lock using Bluetooth. Make An Auto- Locking Office Door with Smartphone Proximity Sensor. Make An Auto- Locking Office Door with Smartphone Proximity Sensor. We'll be setting up a Raspberry Pi with a Bluetooth adapter to be on the lookout for when your smartphone is out of range, and snap a relay into action to lock the door.
Read More scanning to detect presence of the user . Suffice to say, I tried that, and it was hideously complicated and didn. There is however a much easier solution that also serves as a good introduction to the sheer extensibility of Open. HAB: we. You can visit this URL to see a simple example of this on your own server. This in incredibly powerful, as it exposes the full potential of Open. HAB and allows you to write custom interfaces; or in used reverse, to report the status of sensors without having a specific binding.
If nothing is listed, try another adapter, yours isn. The next step is to find the Bluetooth hardware address of your device. Ensure your phone is open on the Bluetooth settings page (which puts it into pairing/public mode), and obviously that Bluetooth is activated.
You should find a hexadecimal hardware address listed. From your Pi user home directory, create a new Python script and paste in this code. There. Change James. In. Office to the codename of the switch you defined. Go ahead and run the script if you haven. It takes about 1.
Check the log file if nothing happens, it could be that you. On the settings screen, enter the local URL as the internal IP you. For remote URL, enter https: //my. As well as the vast list of supported devices with bindings, you can use the RESTful interface, HTTP extensions, and IFTTT to read from or.
For that, we need to get creative. Read More). Stay tuned to Make. Use. Of for an advanced guide that covers Z- Wave and other cool tricks you can set up.
If you need help with a specific part of this guide, please ask away in the comments. If you want help with another binding or some advanced topics we haven.
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How to use Nikon lenses on a Canon DSLRI recently took the plunge into DSLR cinematography by purchasing an $8. Canon T2i. If you scoff at the idea that video shot on a consumer grade Rebel can be taken serious by pros, I look forward to showing you some of the video I’ve been shooting. But today I want to talk about lenses. Both Lara and I used to be professional photographers, and during those years, we acquired a fair bit of top- notch Nikon glass. So when I was looking for a HD video DSLR, I looked in vain at Nikon – Canon is so far ahead of every other DSLR manufacturer in this regard that it’s not worth discussing.
I’d long heard about adapters that allow you to use Nikon lenses on Canon bodies, but I’d always dismissed them mainly because they don’t work with autofocus or other electronics, which is a big deal on modern still cameras. But video is another matter entirely. Manual focus is the only way to go with video. Furthermore, one of the limitations of the T2i interface is that, if you’re using modern Canon lenses, you have to hold down a button on the back with your right thumb AND AT THE SAME TIME rotate a dial with your right index finger to change the aperture. Wouldn’t it be nice to just rotate the aperture ring instead? Using a lens adapter, you can. Looking at lens adapters can be confusing: They range in price from a $2.
Novoflex, to a $7. Fotodiox, to a $9. Hong Kong ebay member Kawaphoto. I’ve since purchased and used 4 of them, and here’s what I’ve discovered.
I began by ordering the cheapest one from Hong Kong, and it arrived in less than a week via mail. With a little guesswork in how to correctly attach the thing (it comes with no instructions), I figured out how to rotate and lock it into place. Then I gingerly seated it on the Canon, worried that the protruding elements of the old Nikon lenses would hit the mirror or other electronics on the Canon. In fact, I had to remove a protruding element on my Nikon 3.
But once that was done, it clicked into place and was good to go. The video produced was sharp and the lenses focused normally, no problem focusing to infinity (but it does allow you to go beyond infinity, which is slightly annoying if you routinely focus by looking at the focus ring instead of through the viewfinder). I was so impressed with the fact that I could now use my Nikon glass on the T2i that I initially overlooked the fact that there was a little bit of play between the lens and the camera body. I ordered two more of the same inexpensive adapters, thanking, screw the expensive ones, these are great! But I got a wakeup call when the next batch arrived. One of them seemed to be fine, but one of them was a loose fit, which allowed the lens to rock back and forth when I turned the aperture dial, throwing the image slightly out of focus and jogging the image.
At that point, it was clear to me that the cheap adapters, while they work, are not machined to exacting specifications. While not a big deal for only occasional use, I found this highly annoying with heavy use. So I shelled out for the next cheapest model, sold by Fotodiox on Amazon for $7. It arrived quickly and much to my surprise, I discovered that it was made from plastic on one side, metal on the other. That worried me at first until I rotated it onto my lens and it snapped into place requiring a reassuring amount of force. The fit was like night and day from the all- metal cheaper version.
Obviously made to much higher specifications, it holds the lens without any give at all. I can now twist the iris and focus without any fear of slippage. Because all adapters are a bit of a pain to take on and off of your lenses, it’s a good idea to purchase one for every lens you are planning to use, and simply leave it on all the time. This means buying Canon lens caps for all your Nikon glass (in this business it seems every time you buy something, it means you have to buy yet another thing to support it, followed by yet another thing to carry it in, etc.)I have not tried the more expensive version from Novoflex, because the $7.
Fotodiox model works perfectly for me, and is the one I recommend if you’re shooting video professionally. If you’re only occasionally using Nikon glass on your Canon, buy three of the $9.