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Tired of expensive disposable batteries and rechargeable AA suck. So I made a 10k mAh pack for my deadbolt. (thelemmy.club)
submitted 3 days ago* by to c/3dprinting@lemmy.world
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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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[–] 10 points 2 days ago (4 children)

There are bolts with a clutch, so they are always locked from the outside and unlocked from the inside. Pretty handy.

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

    I'm not sure I understand how that'd work. How would they know when the door was closed so they could automatically lock the deadbolt? Or would you need to use a key to close the door from the outside?

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  • [–] 4 points 2 days ago (1 child)

    They are expensive, but they do exist, it's called a mechanical keyless deadbolt. A local makerspace put one on their back entrance so that members/employees can come and go after hours without having to give everyone a key or use a smart app.

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