So this is my home built time lock safe, I used an old electronic safe with the circuitry removed and connected a timer onto the solenoid and a light so I know that it has unlocked.
I know there is no electronic backup release but there is a key that can open it and if power failure is a concern you can connect it to a battery that could even be kept inside to make it portable.
Just thought id post to give people some ideas.
Homemade Time Lock Safe
- Sir Cumference
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Re: Homemade Time Lock Safe
Nice.
How did you interface the timer with the solenoid?
What kind of timer is it?
How did you interface the timer with the solenoid?
What kind of timer is it?
~ Leatherworking, blacksmithing , woodworking and programming are the most pervertable skills you can learn! ~
- KatieTiedUp
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Re: Homemade Time Lock Safe
Just a 12v timer of amazon, when activated it powers a relay which you wire the solenoid toSir Cumference wrote:Nice.
How did you interface the timer with the solenoid?
What kind of timer is it?
Re: Homemade Time Lock Safe
may I suggest that you use the normally open relay contacts to control the solenoid IF the solenoid holds the door locked when energised (eg against a spring-loaded bolt). This means that if power fails, the relay will de-energise and open the supply contact to the solenoid, which in turn will release the lock when un-powered.KatieTiedUp wrote:Just a 12v timer of amazon, when activated it powers a relay which you wire the solenoid toSir Cumference wrote:Nice.
How did you interface the timer with the solenoid?
What kind of timer is it?
This is as near a fail-safe as you can get with this sort of electro-mechanical method. Always design so power is required to maintain a locked state, and always use battery power so it will always run out of power at some stage - plus of course other safety release options. Using a solenoid that must be energised to release a lock could mean failure to unlock in the absence of power, as can using a relay to switch on that solenoid on to release the lock.
be a switch, double the fun
- KatieTiedUp
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Re: Homemade Time Lock Safe
Yeah I think I'll take that onboard for Version 2 haha, thanks.lj wrote: may I suggest that you use the normally open relay contacts to control the solenoid IF the solenoid holds the door locked when energised (eg against a spring-loaded bolt). This means that if power fails, the relay will de-energise and open the supply contact to the solenoid, which in turn will release the lock when un-powered.
This is as near a fail-safe as you can get with this sort of electro-mechanical method. Always design so power is required to maintain a locked state, and always use battery power so it will always run out of power at some stage - plus of course other safety release options. Using a solenoid that must be energised to release a lock could mean failure to unlock in the absence of power, as can using a relay to switch on that solenoid on to release the lock.
- Sir Cumference
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Re: Homemade Time Lock Safe
Ok, I thought it was a kitchen timer.
A reliable way to interface a cheap kitchen timer with a solenoid could have some interesting possibilities.
A reliable way to interface a cheap kitchen timer with a solenoid could have some interesting possibilities.
~ Leatherworking, blacksmithing , woodworking and programming are the most pervertable skills you can learn! ~
- KatieTiedUp
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Re: Homemade Time Lock Safe
Yeah like attach two paperclips to it and to the solenoid wires, twist and off you go pretty much fail proof tooSir Cumference wrote:Ok, I thought it was a kitchen timer.
A reliable way to interface a cheap kitchen timer with a solenoid could have some interesting possibilities.
- Sir Cumference
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- Posts: 1608
- Joined: 29 Jan 2012, 22:00
- Location: Scandinavia
Re: Homemade Time Lock Safe
I presume that was meant as a joke?KatieTiedUp wrote:Yeah like attach two paperclips to it and to the solenoid wires, twist and off you go pretty much fail proof tooSir Cumference wrote:Ok, I thought it was a kitchen timer.
A reliable way to interface a cheap kitchen timer with a solenoid could have some interesting possibilities.
~ Leatherworking, blacksmithing , woodworking and programming are the most pervertable skills you can learn! ~
- KatieTiedUp
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- Posts: 11
- Joined: 03 May 2016, 19:23
Re: Homemade Time Lock Safe
fail proof obviously but the design itself basic but effectiveSir Cumference wrote:I presume that was meant as a joke?KatieTiedUp wrote:Yeah like attach two paperclips to it and to the solenoid wires, twist and off you go pretty much fail proof tooSir Cumference wrote:Ok, I thought it was a kitchen timer.
A reliable way to interface a cheap kitchen timer with a solenoid could have some interesting possibilities.