Where Do I Start?
Posted 30 April 2008 - 09:22 PM
Posted 01 May 2008 - 06:21 AM
All this can be miniaturized and placed inside the box. Even a rechargeable battery and circuit can be set up, where the battery can be charged like the pace makers' batteries... from the outside with an induction coil.
Sounds like a fun project and wish I was still doing electronics.
Posted 01 May 2008 - 12:11 PM
here's a crappy drawing of what i think would work
basically you have to have all 4 switches (or however many) in the on position for the circuit to be complete...when the circuit is complete you can have it fire a relay (which depending on the voltage used etc... this might not be needed....i just put it in there) that triggers a solenoid...the solenoid would push open the side of the box which is normally held closed with a magnet or two
Posted 01 May 2008 - 12:45 PM
Posted 01 May 2008 - 02:19 PM
also most solenoids (if memory serves correct)....pull...instead of push....push types are available you just have to make sure you get the right time
you could also use a pull type if you had a latching mechanism on the inside of the door that was connected to the solenoid...when the solenoid fired it would pull the latch open...
either way it would probably be best to have a timer wired in somewhere....which would necessitate the relay because of voltage issues
Posted 01 May 2008 - 02:27 PM
*dsenette smacks himself in the head for mentioning timers
i'm going to have to try to build something like this for my brother...he's getting married this month...hmm wonder how fast i could do this?
Posted 02 May 2008 - 12:58 PM
If you finish this project for your brother within the month, you'd sure as heck better post step-by-steps for me!
Posted 02 May 2008 - 01:00 PM
if you're interested in the building and figuring out of random things (such as this) check out www.instructables.com it's a great community devoted to making things etc....very fun place to look around
all in all this one shouldn't be a difficult project...just a matter of building the box and wiring it up
Posted 02 May 2008 - 01:02 PM
Posted 02 May 2008 - 10:59 PM
With 1,000 Reed Switches...I suggest you give one to me (haha) and then you can make a thousand magnetic chess boards and sell them for profit!
Posted 06 May 2008 - 07:26 AM
i found a bunch of small (low voltage) push solenoids as well
none of these are spring return....but....closing the door on the box would return the armature to the original location once the power is cut (i.e. move one of the chess pieces before you close the door)
these are all 12v or less so in theory you could get an old computer PSU and use it for the power on the box....the advantages of using the PSU for the power would be A: you don't have to make a PSU for the thing B: you could use the other rails and connectors to power things like LEDs or fans or a coffee cup warmer or anything like that....it would also give you an on off switch (assuming you find a PSU with a switch....which is pretty common)
Posted 06 May 2008 - 11:52 AM
You could set up a selenoid to pull open a lock when all of the pieces are in the correct spot, thus using power only when you open the door.
I can not draw but the idea is that a lock is normaly closed, when the selenoid recives power the lock is pulled to open as long as there is power, Then goes back to locked when the power is cut.
These are way too expensive, but it is the general idea.
Posted 06 May 2008 - 11:58 AM
i disagree....with either setup (yours or mine)...power would only be used when it's being applied to the solenoid by completing the circuit....if there's no power on the circuit then the solenoid would be "non energized" and therefore remain dormant...once you apply power (complete the circuit with the magnet switches)...then it will draw current....of course if you use a computer PSU it will draw power continuously as long as the power switch is in the on position (assuming you jumper it correctly to be always on so that you can use it as a bench supply)
All of this requires a constant use of power.
You could set up a solenoid to pull open a lock when all of the pieces are in the correct spot, thus using power only when you open the door.
Posted 06 May 2008 - 12:14 PM
Is the desired result that the door will open mechanicaly?
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