How to unlatch a door based on a digital clock reading?

What type of components would I need for the following: I need a small door (1 inch by 1 inch) to be able to slide open if a digital clock reads past 12:00. Otherwide the door cannot be slid open. I think I would need a timer of some sort, and a switch, but how can I get the door to operate?
Thanks so much!

by eehobbyist
March 11, 2013

Google for:

small solenoid actuator

by signality
March 12, 2013

Thanks very much...I'll look into it.

by eehobbyist
March 12, 2013

Do you think muscle wire would work? I found some muscle wire springs that require 3 amps. Do you think this is a high current for this small circuit application?

by eehobbyist
March 16, 2013

Don't know anything about it.

3A for how long and at what voltage?

i.e. what charge and power?

by signality
March 16, 2013

I haven't started the design, and its been a long time since I've done this. The muscle wire is not what's needed, the small solenoid actuator is the answer. The components in the circuit are: a digitl clock whose time can be read by the circuit and maybe set, a button that can be pressed. When it is pressed, the time will be checked, and the actuator energized if the clock reads a certain time. When the actuator is energized, a plastic door can be slid open. I don't know what the Vcc would be or what other components would be needed. Can you give me some suggestions? I really appreciate your help so far. Is there a kit that would help me fill in the blanks of what I need? Many thanks!

by eehobbyist
March 17, 2013

Suggest you do more Googling ...

"digital clock with switch kit"

by signality
March 17, 2013

Thanks, that's a good idea!

by eehobbyist
March 17, 2013

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