Did you have any success with these other two? Working better? How’s the connection to HA?
My first smarwi unit stopped working after 10 days (it was purely soldered) and I ordered another one, which still works fine.
Drivent also works fine and is overall better choice, except Smarwi took couple of weeks to deliver, and Drivent shipment is usually 2-3 months.
I needed one urgently for a baby room so I had to go with Smarwi at least for one of the rooms.
After getting Drivent unit and testing it, I ordered 4 more (still waiting for these)
Smarwi has a Home Assistant plugin (requires HACS to install) which you need to remove/add each time your smarwi IP changes (I’ve added mine to static section of router DHCP)
Drivent recently got support for MQTT discovery, so you just need to configure it with MQTT server IP once and as long as that one doesn’t change, it will work regardless of whenever drivent IP changed or not. It also got support for native HomeKit integration (doesn’t require raspberry PI). They also plan to release zigbee version soon. And there is a hope for release of a battery powered version (they don’t promise anything but there are photos of a prototype)
Smarwi officially doesn’t work in extreme conditions like storm, since storm easily opens window closed by smarwi, and when smarwi looses power (which happens during storms a lot) it doesn’t make any pressure at all.
Unlike smarwi, drivent doesn’t loose pressure when it looses power, and also allows configuring window pressure (lower pressure it makes, less noice it produces) and I think it can deliver higher pressure than smarwi does. There is a setting for pressure safety, which allows removing pressure if window meets obstruction (like fingers). Device maker says when pressure safety is set to zero it makes enough pressure to crush fingers.
For the same reason I don’t think smarwi can be used in extreme cold (-30 celsius and below) which requires window to be closed very tight, or else icing becomes major issue. In Drivent’s telegram channel I saw some photos of people from Siberia using Drivent (not without issues)
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Thanks for the great reply!
Wow, 2-3 months for delivery is a long time. But I really like that Drivent ha support for storms. I have a sunroof that it should open and close.
Where did you order it from?
Well, they are working on improving production time. Currently they wait for gathering enough orders to start manufacturing another batch, so if you place your order right before manufacturing another batch starts, shipment may be faster. But they have strict quality control standards and details they get from China often don’t meet them, so they have to repurchase and that’s how you end up waiting so long.
You can talk to the guy who makes it Telegram: Contact @nik_gerasimov at telegram. There is a purchase bot Telegram: Contact @DriventBot at device telegram channel Telegram: Contact @Drivent but it currently only supports Russian language.
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Hi! I’m a bit curious about how the other four units you purchased faired? Have they been successful?
Have you tried any other products since last?
Do you know of another way to purchase if you can’t use the purchase bot since I can’t speak Russian. 
I just found this now and was thinking of using the AXA 2.0 motors because they are not only IR remote, but they also have LINBUS communication. Jonothan Oxer (SuperHouse) had a good video on these a little while back. Looks like you can get the status (open or closed) of the window via the LINBus connection.
Has anyone here had experience of using these controlled via LINBus and MQTT?
@galagaking
I had a look at your project today ( I know, I am late to the party).
It looks very similar to a project Jon Oxer (Superhouse) ended up abandoning as he felt WiFi wasn’t secure enough. He designed a board that slotted into the batter compartment of the AXA 2.0 as when powered via LINBus, it tends to supply power from LINBus connection to the batteries, so don’t want batteries and LINBus at same time.
Have you thought about designing a board for it, or is there just not enough interest to warrant it?
Hi! I’m a bit curious about how the other four units you purchased faired? Have they been successful?
- 1 got broken pretty quickly and sent back for warranty repair.
- 2 are working fine
- 1 I have installed on the pool window, and has some connectivity issues. At the moment I’m not sure if it’s a device issue or if it’s a room issue and affects all devices in the room. But whatever it is, it’s still does the job of bringing pool humidity down and avoiding room getting cooler than necessary.
Nikita says you’ve already spoke with him 
Thanks and yes! I spoke with him, very friendly guy! I however realized that it only had a 13 cm arm and I need a longer arm in order to ventilate more efficiently so I need to continue my research.
Right now I’m looking at Tuya compatible devices, but I really liked that Drivent was secure in a storm and kept its pressure.
Hi Brendan, thank you for your interest in my project. I did look last year at some designs from Jon Oxer (#22: AXA Electric Window Motors Controlled By LIN Bus And Arduino – SuperHouse Automation). His ESP design was not available yet. In the end I created my own setup as documented on my github. Feel free to design your own PCB, or order Jon’s (very nice) design from jclpcb. I will just open a small window on the second floor, so security of wifi is not of my concern. But I can not decide for your situation. Cheers, Frank
Interesting idea! I have a ceiling hatch, see images. It weighs quite a bit but maybe if you place two of them, one on each side? If you send an open/close command to them, how much in sync are they?
I think weight is gonna be bigger issue than length. Drivent uses thin plastic leg that struggles with much easier weights
Chain Tuya is a way to go, but I’m selling mine because all of the issues I had with it (mainly it was making too much noice and required drilling for reliable behaviour, which wasn’t something I was willing to do in rented place)
Oh, thanks for letting me know. Which model of the chain Tuya have you been using? I except I need to screw the thing into place but since it’s a wooden hatch that is very easy to do. I have been looking into this model:
That is tilt and turn window? Can you still open it manually (just top tilt)?
Ordered the parts and i hope it will succeed 
@JustGeus
Any update? I would assume you can connect it through Alexa or Google Assistant, even it is not that elegant and uses cloud, which sucks
If it is connected in Home Assistant, you can pass that to Alexa and Google.
Both Alexa and Google Home support covers.
Here is info on a working ZigBee window opener.