Immediately Nabu Casa is launching the House Assistant Join AUX-2, a small field that lets you breathe new life into the not-so-smart gadgets round your private home. Consider it as a wise residence multi-tool: it could stream audio, management RS-232 serial gadgets, and join a Z-Wave adapter, all whereas performing as a Bluetooth hub. And by in style demand 🥁, it comes with Energy over Ethernet (PoE) 🎉, although it’s also possible to use USB energy and Wi-Fi.
Join AUX-2 is all about making your outdated gear new once more. For instance, its audio streaming capabilities can help you flip that great-sounding however forgotten hi-fi into one thing that performs in sync with fashionable good audio system. And with serial management, you may convey that outdated (however nonetheless functioning) photo voltaic or local weather tools into your automation setup to decrease your power consumption.
AUX-2 doesn’t simply make older gadgets higher, both. There’s additionally lots of new tools that may achieve some new tips. Skip that TV spy ware, block it from the web, and as an alternative use your AUX-2 to regulate it, or get your Join ZWA-2 in the very best spot in your own home whereas powering it with PoE.
Join AUX-2 is on the market worldwide at present for $69 / €59.
I’m Shay, Product Supervisor at Nabu Casa. You would possibly know us because the group that makes official House Assistant {hardware} and manages House Assistant Hyperlink. As one of many Open House Basis’s industrial companions, our work helps fund its mission to maintain good houses non-public, sustainable, and formed by you. Alternative and sustainability are two of the muse’s three core rules, and so they’re on the coronary heart of Join AUX-2: you get to run your private home on your phrases, utilizing the tech you already personal. On this put up, we’ll cowl how AUX-2 got here to be, the entire cool issues it could unlock to your good residence, and why we’re so excited to share it with the neighborhood.
Ports with a goal
Join AUX-2 began as a a lot easier concept. After we confirmed off moveable Z-Wave final October, our unique idea was a compact field that allowed a Join ZWA-2 or ZBT-2 to run over Energy over Ethernet. Across the similar time, we had been exploring how we may convey serial gadgets into House Assistant. Since PoE accounted for many of the {hardware} value of Join AUX-2, including further ports turned out to be surprisingly reasonably priced.
Many ports, much more potentialities
That sparked our first concept: merge the serial and USB designs (the S in that acronym does stand for serial in any case 😁). However why cease there? With Music Assistant and Sendspin quickly changing into extra superior, it made sense so as to add a combo analog/digital audio jack. After extra iteration, we discovered makes use of for a second serial port, a Grove connector, and an upgraded Bluetooth antenna. Finally, we had to attract the road… in any other case, we might have by no means truly shipped it. That brings us to the identify: AUX stands for Audio, USB, and X for serial… but it surely additionally sounds cool 😎
So whereas we added lots of ports, each was fastidiously thought-about: we put actual thought into how they’d work on their very own and with others, and all of the completely different jobs they might do across the residence. Constructing one thing with all this performance additionally helps a much bigger ambition of creating certain no gadget is left behind. Probably the most sustainable gadget is the one you already personal, and we consider it’s best to have the choice of creating your completely good gear good earlier than you’re backed into changing it. Now you should use Join AUX-2 to save lots of a tool from the scrap heap, or pull it off some hellish proprietary cloud and again beneath your management (and in the event you do, please inform us about it!). Whether or not it’s an amplifier, a serial gadget, or sensor – AUX-2 has a port to convey it into your good setup.
Forgotten audio gear will get good
There’s lots of neglected audio gear on the market that sounds superb, and will be had for a steal on native marketplaces. A lot of this gear has an optical digital audio enter (a port that receives sound as mild by means of a fibre-optic cable) and a serial management port (a two-way connection for instructions). By connecting to each, Join AUX-2 makes it simple to show these traditional gadgets into one thing that rivals most good audio system.
Optical audio brings clear, lossless CD-quality sound into the gadget. Whereas serial lets you management the amount, supply, and energy, even from standby. This additionally allows you to flip off some audio tools’s poorly maintained good options, which frequently waste lots of power in linked standby. AUX-2 by no means sips greater than a watt or two 🤏
AUX-2’s digital-to-analog converter (DAC), the chip that turns digital audio into sound, is a pleasant step up from the one used within the Voice Preview Version, letting you plug it into almost any AUX port 😁 Its digital output is the star of the present, permitting to your self-hosted FLAC music library to be performed in good readability. It additionally senses if the audio cable is analog or digital, and can mechanically change the playback to the proper output.
A lot of audio system all enjoying in sync with AUX-2
Music Assistant is what supercharges this complete setup. It helps almost each streaming service beneath the solar, together with native information, combining them into one cohesive library, all the time selecting the highest quality file to play on AUX-2. Should you haven’t used Music Assistant shortly, it’s made big leaps prior to now a number of months. Particularly, it launched the brand new Sendspin protocol, which now allows you to sync audio throughout good speaker manufacturers. This implies you may play music in sync by grouping a number of AUX-2s collectively, or pair them with a HomePod, Sonos speaker, and extra. Apparently, sound passes between walled gardens 🎶
Serial provides you actual management
Let’s face it, you’re not going to interchange your photo voltaic inverter or brand-new TV as a result of the app sucks. However we are able to exchange the app, and get your knowledge again whereas we’re at it. Serial has been sitting on the again of this sort of tools for many years, and it’s what skilled management programs have relied on for years. We even discovered a approach to make use of it with Modbus (extra about that in our deep dive 👇).
House Assistant already helps a fast-growing listing of serial gadgets, and so they’re extremely simple to arrange and use. With two ports included, you may management two gadgets without delay. Simply get the proper cable to your serial gadget, plug it into AUX-2, and add its integration in House Assistant. Some gadgets want serial management turned on of their settings first, and then you definitely’re set. So, in the event you’re sick of your LG TV listening into your private home, lower it off out of your community, and use the LG TV serial integration 😏
That is useful data for serial devs, however most individuals can in all probability skip this bit.
To begin off, we selected the RS-232 commonplace because it was the commonest connector discovered on gadgets we examined, however we additionally found a approach to join RS-485 gadgets. Particularly, utilizing the USB port with a $15 RS-485 adapter, you may simply join Modbus gadgets. Between these two requirements, it’s doable to attach most serial gadgets.
One other selection was the three.5 mm serial connector, permitting you to make use of the audio cables you already personal to attach AV receivers and TVs. Don’t fret, out of the manufacturing unit we put a sticker over the three.5 mm serial ports to keep away from individuals complicated them with audio ports (it in all probability gained’t trigger points… however let’s not discover out 😬).
Different gadgets will use DB9, RJ11, mini-DIN, and the listing goes on. We prototyped having different connections on the again (particularly making an attempt to slot in DB9), however we discovered converter cables a greater answer for all this selection. One other factor we noticed throughout testing was cables switching the RX and TX features, and we determined so as to add switches to the underside to permit individuals to purchase any cable with the arrogance that it’s going to work (with out opening it up ✂️).
Z-Wave in the very best spot
Our Zigbee and Z-Wave adapters are a number of the strongest available on the market, with class-leading vary, simplicity, and reliability. However generally your House Assistant system is in a basement or behind thick partitions, and our Join ZWA-2 and ZBT-2 solely work through USB, which implies you’re tethered to that much less optimum location. Join AUX-2 permits these adapters to be positioned anyplace within the residence with community connectivity.
An necessary factor to notice: We’ve been testing Z-Wave for months with this setup, and it really works nice. Zigbee remains to be very new, so we’re not at present promoting this functionality on our advertising pages. It really works, however we wish extra individuals to check it earlier than we promote it for on a regular basis use. So anybody who can check, please inform us about your expertise within the feedback.
We’d extremely advocate utilizing these gadgets over a wired connection, and PoE makes for a fairly streamlined setup. Whereas Wi-Fi is feasible to make use of (our testing with Join ZWA-2 reveals solely marginal will increase in latency), there’s nonetheless the prospect of instability or, within the case of Zigbee, elevated interference.
PoE provides you a fairly clear two-cable setup.
One factor we haven’t been in a position to get working is Thread connectivity; it’s simply too latency-sensitive and can’t be run reliably over a community connection. Theoretically, a Join ZBT-2 and AUX-2 could possibly be mixed to make a standalone OpenThread border router that runs independently of your House Assistant system, but it surely requires an enormous rewrite of the serial communications and that work hasn’t even began but.
Change your Bluetooth hub
Bluetooth is utilized by all kinds of good residence gadgets; some even make it look like their cloud-connected hub is the one approach to join them. The reality is, Bluetooth gadgets usually work higher when instantly linked to House Assistant. Join AUX-2 is our first purpose-built gadget to attach Bluetooth gadgets (known as a Bluetooth proxy in House Assistant).
That piece of steel on the proper is a really succesful antenna.
No flashing or configuration: whenever you add AUX-2 to House Assistant, it’ll begin discovering Bluetooth gadgets round your private home. It has an optimized antenna, and you’ll put a number of in your house to enhance Bluetooth connectivity. Additionally, whenever you use it with Ethernet, it’ll now not be sharing the identical antenna between Wi-Fi and Bluetooth, guaranteeing it’s devoted to the job.
Constructed to be tinkered with
Like all official House Assistant gadgets, we’ve made Join AUX-2 to be tinkered with. It’s totally unlocked and able to check out new firmware. Wish to flip this right into a devoted Squeezelite or Snapcast streamer? Construct to your coronary heart’s content material 🛠️
The Grove port on the AUX-2 affords a simple approach so as to add sensors to the gadget with out opening it up. It helps GPIO and I2C sensors, which measure issues like temperature, humidity, or mild through AUX-2. These readings then present up in House Assistant, the place you should use them in dashboards and automations. For instance, in the event you’re utilizing AUX-2 to observe your rack’s uninterruptible energy provide (UPS) or energy distribution unit (PDU), why not add a temperature sensor to regulate its cooling? This may all be achieved with a $5 sensor and a little bit ESPHome constructing.
These screws are the one factor between you and the insides.
As all the time, we by no means use clips or glue; simply 4 Phillips head screws and you’ll take the entire thing aside. We’ll additionally launch all of the PCB and 3D print information to get the modding neighborhood going.
Oh yeah… it has PoE
Our final 4 merchandise might need skipped Energy over Ethernet (PoE), however the AUX-2 is 4 merchandise in a single… so by our calculations, we now have an excellent break up of PoE and non-PoE gadgets 😉 Joking apart, we all know what number of of you like PoE, and we’re additionally large followers. For anybody new to it, PoE lets you ship each energy and knowledge to a tool with a single Ethernet cable, which implies you may place it anyplace you may run a cable, with out the necessity for a close-by outlet. For installers or DIY professionals, it gives superb flexibility, and we thought this gadget was an ideal match, as you are able to do some very superior stuff with AUX-2.
Energy it with USB or PoE, and join it with Ethernet or Wi-Fi.
We put lots of work into getting it proper: we examined the PoE port throughout a variety of {hardware} to make sure it really works reliably, even with choosy networking gear. So we’ve discovered so much and will apply that to future merchandise. Now we simply want to ensure the demand is there.
Constructing for everybody
Join AUX-2 has a little bit one thing for everybody, but when it’s greater than you want, that’s additionally OK. You would possibly solely need PoE to your Join ZWA-2, or a Bluetooth hub alternative. Our {hardware} is all the time targeted on bootstrapping improvement, and it’s no coincidence that serial has progressed leaps and bounds this yr, or that extra Zigbee adapters can now work over a community. These capabilities are actually constructed into ESPHome and House Assistant, so you may DIY an answer that works for you.
As we all the time say, whenever you purchase our merchandise, you’re investing in improvement. That’s the facility of this neighborhood: everybody advantages from what we construct collectively. And all of us share the identical aim of getting probably the most out of the gadgets already in our houses. So get within the feedback and inform us what you make along with your AUX-2!
