What device can rotate a knob and works with HA?
What device can rotate a knob and works with HA?
I was accidentally locked out of home again, and I had to call a professional to open the lock.
But if someone was home, they could have just turned the knob of the door from inside. There's a device that can do that? It needs to do 3 full turns and it requires a bit of force to do that (armored door with iron bars that slide in every direction, so it has a big inertia to start)
I saw a ready solution on a store, the iseo x1r, but that costs 1000 euro + another 200 for the gateway (not mandatory but otherwise it uses proprietary Bluetooth protocol and so it can't talk with HA
It sounds like you have a heavy duty door lock to be very secure, but you are essentially trying to backdoor all that security with a new internet-connected thing. An adversary only has to break the weakest link here, rendering the physical door lock obsolete.
If you are just going to have some digitally-connected device ultimately controlling access to the house, I'd go with just some standard door lock that does that (i haven't used em but they exist). The physical lock on those is surely less what you have know, but with your proposed solution the physical lock probably isnt what people who crack anyway.
Yes, but now you’re weakening two aspects of the security, not just one. And for the digital solution you would also need to (break into the network + break into HA) -or- (break zigbee/zwave/thread) + be physically present to take advantage. I would argue this is generally more secure than a mass-produced lock with unknown vulnerabilities that’s easily recognizable from outside.
How do you keep getting locked out? Would it not be easier to remember your keys when you go outside?
No no, surely the solution to this is a mechanical one
I thought I had keys in my pocket, instead it was a different bunch. The keys were inserted in the socket from the inside, it doesn't allow to insert the key from the other side, so I couldn't use the backup pair that I keep in a separate location
Maybe just a spare key in a hidden lockbox outside?
You could also look at these.
With the WiFi add on it’s HA compatible.
The issue is going to be that you need 3 full turns. It also sounds like you're not actually describing a "knob", meaning a normal doorknob, but some sort of metal wheel.
Picture may be more helpful, but it certainly sounds like nothing would exist for this.
If you have some electronic skill you can use espHome on a esp32 microcontroller to control an RC Servo motor.
https://esphome.io/components/servo.html
If you want out-of-box there are several electronic locks that will work.
https://community.home-assistant.io/t/smart-locks-compatible-with-home-assistant/590662
RC Servo motor
My guess is that a servo will probably be a bit too weak for that. They'll propably need a stepper motor.
Depends on the lock being actuated and the torque of the servo, I have some that can do 4.4 N-m.
https://www.amazon.com/high-torque-servo/s?k=high+torque+servo
A stepper motor would also work for sure.
Thanks for the link, in that thread I found two promising products, Nuki and tedee.
One is small and stylish but uses a tiny expensive single use battery, the other is plasticly and bulky but uses 4 standard AAs
I'll check specs carefully to see if they have enough torque
Edit: the 190 euro Nuki lock is advertised as "matter/thread compatible" but you need to pay a 50 euro in-app purchase in order to enable it. This is not stated anywhere, including the user manual, website and support faq. I discovered that from a YouTube review
I have a previous version Nuki with a keypad. I think it works great, also locks my door automatically at night. I don't have it connected to anything else however, to limit attack surfaces. You can still use the app, as it uses bluetooth. That in-app purchase is pretty shitty, though the lock itself is not that expensive compared to competitors. I would advise to search for discount codes or wait for promotions, which happen frequently.
Do remember that it requires a key into the cilinder on the inside, so if you don't have a double cylinder you can't use your key on the outside. Which means you can lock yourself out when the batteries die. You should get a cylinder with an emergency function, so you can use a key on one side when a key is present on the other side.
It's not high tech, but a door lock with a simple pin pad has been great at my house. Never have to worry about having keys or getting locked out. Just have to change some batteries every six months or so. This isn't Internet connected, but I see that as a benefit.
Can you share pics with this door? How do you walk outside and have it lock behind you?
When you close it, it's not possible* to open it again from outside
* = only the triangular piece engages, so a professional can unlock it from outside by using a thin sheet of steel
I can't help you but I'm fascinated by your door now. Does this door/lock have a name? How did you end up with such an elaborate mechanism?
I think you should have a thin sheet of steel kept in your car or somewhere safe, so you can just use that like a locksmith.
Yea, I've seen these in Italy, you 100% need a key to open from the outside.
If you don’t mind me asking, why do you have such a door in your home?
How about a retrofit smart lock?
I'd rather switch to a lock that doesn't lock automatically and captures the key, when open.
Ok, the latter is probably a bad idea for a fixed lock. Works pretty well for a padlock.
https://www.switch-bot.com/products/switchbot-lock
Not sure if it's compatible with your particular lock, but I've got switchbot stuff integrated into home assistant without issue (using their hub).
Nice this looks compatibile, except for the open sensor, my door has an ultra thick frame and it's only possible to install it at 12 cm, while the guide says 4 cm max. Does it really need it?
It is used to detect closing of door and lock the door once it is closed. You may need it during the initial setup. as long as it can be placed close to the door lock, it should work ok.
otherwise, once integrated with HA, you can probably use your own contact sensor and trigger door lock using HA
btw, i am using ESPHome bluetooth proxy with Switchbot