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23rd June 2009, 01:06 PM
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 Digital lock
I'm coupling a 4 digit lock circuit using LS7220 IC's. Please can someone tell me which electronic key powered by the relay to use and how to connect it. From Nigeria
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23rd June 2009, 01:21 PM
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Could you re-phrase the question to make it more understandable please?
__________________ Eccentric millionaire financed by 'er indoors | |
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24th June 2009, 11:21 AM
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I mean a device that locks or unlocks when when it recieves some current
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24th June 2009, 11:42 AM
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What is it that you want to lock/unlock? This will determine the item that is most suitable, if one exists... It would be most beneficial to all on the forum if you could set out exactly what it is you want to achieve instead of drip feeding information......You are more likely to get help that way..
__________________ Eccentric millionaire financed by 'er indoors Last edited by Chippie; 24th June 2009 at 11:44 AM. | |
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24th June 2009, 12:15 PM
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24th June 2009, 05:17 PM
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The link you posted isnt a code lock........Like I said in a previous post...tell us a bit more about what your trying to achieve... The above circuit link although provides some sort of solenoid function is doesnt have any security in the form of a code lock which is what you originally asked about......
__________________ Eccentric millionaire financed by 'er indoors | |
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24th June 2009, 05:28 PM
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24th June 2009, 05:34 PM
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Nope link gives an error. The entire schematic for the LS7220 is in the datasheet. | |
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24th June 2009, 05:43 PM
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I also have a touch plate and an LDR powered intruder alarm. When they are powered, the alarm turns on first without detecting anything. Is there anything i can do to stop this because, if the system is on and power fails, before it switchs to alternative source of power the alarm goes on. The circuits are on http://www.circuitstoday.com/wp-cont...ouch-plate.JPG for the touch plate and http://www.circuitstoday.com/wp-cont...-circuit-1.JPG. Again the intruder alarm doesn't respond to normal walking pace.
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24th June 2009, 05:45 PM
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__________________ Eccentric millionaire financed by 'er indoors | ||
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24th June 2009, 06:07 PM
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My original question was the type of electronic lock i'll use in the digital lock circuit
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24th June 2009, 06:11 PM
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What are you trying to lock? a door...? What kind of door...a car door a house door, a garage door? Sorry I'm losing the will to live with this one...... 
__________________ Eccentric millionaire financed by 'er indoors | |
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24th June 2009, 06:16 PM
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Sorry, trying to lock a small safe
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24th June 2009, 06:25 PM
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Doesn't the safe already have a lock?
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24th June 2009, 06:50 PM
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I mean a safe i'll do myself.
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| digital, lock |
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