Eneloops would only last about 3 weeks. And disposable last 2 months. This door is used a lot and since it has Zwave and a door open sensor it sends info on every open.

Bonus, since it can handle the lipo AA batteries that put out 1.8v and it gives the motor more oomph I made the battery pack give 7.2v and it never sticks anymore.

This is a garage-door so its not critical access but is used a lot.

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[–] 6 points 2 days ago

The pedantic ludites on lemmy baffle me.

Cool thingy my dude

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  • [–] 5 points 2 days ago

    woah ten kilo milli amp hours!

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  • [–] 46 points 3 days ago (29 children)

    Wait until you hear about this neat invention called a "key". They are quite wonderful, they can securely lock and unlock your door in any conditions and don't need those pesky batteries.

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  • [–] 16 points 3 days ago

    Wait until you hear about this neat invention called a "smart lock". It uses this marvelous key invention you kindly detailed but it also uses magic powered rocks that can send small vibrations in the air to communicate with other magic rocks at home. If their magic energy source is depleted the object you refer to as a "key" may also be operated on this mystical lock to which the lock then whispers: "just let people enjoy things".

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  • [–] 11 points 3 days ago (12 children)

    the batteries in mine last a year and I don't have to carry around any keys but my car keys (when I take the car).

    definitely worth it. I can leave the house with nothing but my phone or bank card and run errands etc. people can access my house when I want them to without issue. it's a huge QoL improvement for me

    that said, I'd still prefer an electronic lock that had a key as well, and wasn't a touchscreen

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    [–] 4 points 2 days ago

    I have this thing and you just turn it. Thats it.

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  • [–] 80 points 4 days ago* (43 children)

    imagine having a door/lock that requires power..

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  • [–] 24 points 4 days ago* (19 children)

    Imagine being locked out of your house because you forgot to bring keys with you.

    Like, I'm sorry if you disagree with this, but holy shit, having electric locks on your doors where you can get into your house based off a fingerprint or a code is a fucking game changer.

    I have two on my doors, one on the front, one on the back, and I installed them at a week or two apart, so if one of them starts complaining that the battery is low, the other one's still good. If one of them goes dead while I'm on vacation, the other one's good.

    Not to mention that you can unlock the door from your phone in case somebody comes over unexpectedly, or if you have a friend coming in from out of town and you're going to be at work when they arrive, you can create a code for them to unlock your front door and come in while you're not even there.

    Plus they still have key locks that I can use if the batteries are completely dead and they can be powered by a 9 volt battery in case I don't have the key with me.

    They're freaking awesome and I am glad they exist.

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    [–] 30 points 3 days ago (9 children)

    Hey I haven't used this model specifically but a PSA to anyone with a motorized lock:

    If your battery is dying seemingly too fast (and it's not an old battery), your deadbolt is probably misaligned. The friction takes a huge toll on the motor and battery life. They should last MONTHS at minimum.

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    [–] 38 points 4 days ago (7 children)

    KmAhs

    Mfer do you mean Ahs?

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    [–] 40 points 4 days ago (22 children)

    Well done, and I’m surprised at all the technophobes in a 3d printing community.

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  • [–] 16 points 4 days ago* (2 children)

    I mean, there has always been a correlation between being technical (as in profession/skills) and being paranoid about technology. When you are in the field, you get a window into how ignorant most of the tech products are security-wise for example. And I guess a good portion of 3d printing people - especially the ones on lemmy - are technical (as in profession/skills), not/not only tech lovers.

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    [–] 14 points 3 days ago (7 children)

    rechargeable AA suck.

    No they don't

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    [–] 3 points 2 days ago (2 children)

    Ostations rechargeable lithium AAs are freaking great for mine.

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  • [–] 1 point 2 days ago (1 child)

    Yeah I'm a huge fan of the rechargeable lithium AAs but they do just die pretty much immediately since the power curve just falls off. But they last a long while and charge nicely.

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  • [–] 1 point 2 days ago

    Yeah, it's because of the buck circuit regulating them down to 1.5v. No warning, they just die because the safety cutoff turns off the circuit when the lithium voltage drops too much. I can live with it though.

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  • [–] 14 points 3 days ago (4 children)

    Why not a cable for power? Does the door need to be able to go somewhere that doesn't have electricity?

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  • [–] 6 points 3 days ago

    I can't answer for the OP - but "it would be a pain in the arse" would be my answer.

    I have an electronic lock on my holiday condo; it's handy to be able to remotely let someone in if I need them to service the AC when I'm not there or something, and just in general it's just, well, useful.

    The batteries last at least 6 months, so honestly I wouldn't bother wiring it in even if it was an option. And the "batteries run out" failure mode isn't exactly a disaster - there's a traditional key I can use in an emergency, and the other "plan B" is the USB-C port on the bottom of the handle on the outside - worst comes to the worst you can just plug in a USB powerbank to power it up.

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    [–] 13 points 3 days ago

    Have you tried puttting in a wired power supply instead?

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  • [–] 15 points 4 days ago* (10 children)

    I am confused, is this not possible to wire properly to a power supply? even though this has increased capacity it would still always be in the back of my head that my door might run out of power 🤔

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    [–] 1 point 2 days ago*

    I have a Nuki lock that lasts 8 months on 4 AA rechargeable batteries it also has a door sensor sending info via MQTT over Thread. Your lock probably has to overcome a lot of friction so the motor uses more juice than normal.

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  • [–] 8 points 3 days ago (3 children)

    Rechargeable Eneloops are Ni-Mh which makes the nominal voltage 1.2V where as the voltage on an Alkaline battery is 1.5V. The rechargeable ones are worse than normal Alkaline batteries. You can get rechargeable 1.5V Lithium AA batteries from Nitecore. Those are much better than Ni-Mhs.

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