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  • ronklo commented on luca8theworld's instructable Retro Inspired Phone Dock6 months ago
    Retro Inspired Phone Dock

    Love the clock app.. what's the name of it?

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  • ronklo commented on robotgeek_official's instructable RFID Door Lock With Arduino6 months ago
    RFID Door Lock With Arduino

    My plan is to modify an electronic push button lock (they are usually about $100), to operate through the RFID reader by using a DPDT relay directly to the lock motor. By simply connecting the motor to the common pins, and the normal motor wires to the normally closed contacts, and then connecting the locks battery to the normally open contacts. A 2 second pulse to the relay would unlock the door. The lock itself has a button to simply lock the door. This would give the added use of a keypad if there is no power, or if the arduino malfunctions. With a wooden door (even with a metal cover inside and out), you could connect the coil wires of the relay through 2 hinges of the door, and completely hide the wires in the door frame (especially if you have a door with a glass insert. There is ...see more »My plan is to modify an electronic push button lock (they are usually about $100), to operate through the RFID reader by using a DPDT relay directly to the lock motor. By simply connecting the motor to the common pins, and the normal motor wires to the normally closed contacts, and then connecting the locks battery to the normally open contacts. A 2 second pulse to the relay would unlock the door. The lock itself has a button to simply lock the door. This would give the added use of a keypad if there is no power, or if the arduino malfunctions. With a wooden door (even with a metal cover inside and out), you could connect the coil wires of the relay through 2 hinges of the door, and completely hide the wires in the door frame (especially if you have a door with a glass insert. There is a RFID control lock you can get on ebay for about $15 that includes RFID tags, that does much of what is needed, but it is a plastic casing and could easily be compromised if it is outdoors, but you can add an external antenna. I like the arduino idea, because you could add BT or wifi to operate from a cell phone, or central controller with logging, and could even sense if the door is opened or unlocked through remote query. .. Lots of ideas. !!!

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