Iron password from outsiders or replacement of the power button
Hi habr! This is my first article. In life, I love soldering and programming.
Actually now I want to bring to your attention the scheme I found in the Internet and converted it just for a computer.
This lotion works on RFID technology (radio frequency identification).
There is a small size board on which a microcontroller with a stitched program is located, this board is connected inside the system unit with 2 contacts instead of the power button, and 2 respectively for power, and all this stuff is mounted from the inside of the front panel of the case, the one that is plastic.
The principle of operation is as follows - you go to a computer that is turned off, hold the key fob, its appearance is as follows:
(it is naturally pre-registered in the base of the controller) to the reader antenna, and the computer starts up. very funny thing, unless of course the lid of the system unit is open and no one starts the computer with a screwdriver.
Here is the initial diagram of the device:
But actually, what I did:
Board size 34x34 mm.
')
Instructions for recording :
Operating mode - when 12V is supplied to the controller, the LED flashes 1 Hz.
Programming mode - LED flashes 2 Hz.
When you press the "OPEN" button a series of short beeps during the lock opening time.
Sound signals:
1 short beep - the card or keyfob is recorded in the controller's memory.
2 short beeps - the card or keyfob is already recorded in the memory of the controller.
5 short beeps - exit from programming mode.
1 long beep - key card memory erased from the controller.
Continuous short signals - memory of cards / keys is full, maximum 10pcs. (controller power off required).
Record MASTER CARD and lock opening time:
1 - Turn off power to the controller.
2 - Press the "OPEN" button
3 - Hold the button to connect power to the controller, after 5 seconds. Controller "Piscnet", the LED will flash at 2 Hz.
4 - Release the button.
5 - Bring a card or a key fob into the readout zone, a single beep will sound, the Master card or the key fob is RECORDED, and the lock opening time is recorded for 1 second.
6 - Holding the card or key fob in the reading area - count the audible signals. The number determines the required time of opening the lock, an increment of 1 second, but not more than 32 seconds.
7 - Turn off the power of the controller or pause for 30 seconds.
Erasing the entire memory of keychain cards:
1 - Working mode.
2 - Press the "OPEN" button and hold down the MASTER card or keyring to the reader and hold it, after 5 seconds a long beep will sound - the memory of the cards / keyfobs is erased.
3 - Release the button we take away the card or key chain.
Adding cards or key chains:
1 - We bring the MASTER card or keychain to the reader and hold it for 5 seconds, 2 short beeps will sound, the LED will flash at 2 Hz.
2 - We bring the card / keychain alternately to the reader - a short beep will sound, the card / keyfob is RECORDED if 2 short beeps are heard - the code of the card / keyfob is already recorded in the microcontroller's memory.
3 - Record the required number of cards or keyfobs, a maximum of 10.
4 - Turn off the power of the controller or pause for 30 seconds <
A short video about how I inserted the first copy into my computer - click
PS:
If you have interesting schemes, throw, I will implement as much as possible.
Who is interested in making a device for doors or something, here is the original: tyk
Actually now I want to bring to your attention the scheme I found in the Internet and converted it just for a computer.
This lotion works on RFID technology (radio frequency identification).
There is a small size board on which a microcontroller with a stitched program is located, this board is connected inside the system unit with 2 contacts instead of the power button, and 2 respectively for power, and all this stuff is mounted from the inside of the front panel of the case, the one that is plastic.
The principle of operation is as follows - you go to a computer that is turned off, hold the key fob, its appearance is as follows:
(it is naturally pre-registered in the base of the controller) to the reader antenna, and the computer starts up. very funny thing, unless of course the lid of the system unit is open and no one starts the computer with a screwdriver.
Here is the initial diagram of the device:
But actually, what I did:
Board size 34x34 mm.
')
Instructions for recording :
Operating mode - when 12V is supplied to the controller, the LED flashes 1 Hz.
Programming mode - LED flashes 2 Hz.
When you press the "OPEN" button a series of short beeps during the lock opening time.
Sound signals:
1 short beep - the card or keyfob is recorded in the controller's memory.
2 short beeps - the card or keyfob is already recorded in the memory of the controller.
5 short beeps - exit from programming mode.
1 long beep - key card memory erased from the controller.
Continuous short signals - memory of cards / keys is full, maximum 10pcs. (controller power off required).
Record MASTER CARD and lock opening time:
1 - Turn off power to the controller.
2 - Press the "OPEN" button
3 - Hold the button to connect power to the controller, after 5 seconds. Controller "Piscnet", the LED will flash at 2 Hz.
4 - Release the button.
5 - Bring a card or a key fob into the readout zone, a single beep will sound, the Master card or the key fob is RECORDED, and the lock opening time is recorded for 1 second.
6 - Holding the card or key fob in the reading area - count the audible signals. The number determines the required time of opening the lock, an increment of 1 second, but not more than 32 seconds.
7 - Turn off the power of the controller or pause for 30 seconds.
Erasing the entire memory of keychain cards:
1 - Working mode.
2 - Press the "OPEN" button and hold down the MASTER card or keyring to the reader and hold it, after 5 seconds a long beep will sound - the memory of the cards / keyfobs is erased.
3 - Release the button we take away the card or key chain.
Adding cards or key chains:
1 - We bring the MASTER card or keychain to the reader and hold it for 5 seconds, 2 short beeps will sound, the LED will flash at 2 Hz.
2 - We bring the card / keychain alternately to the reader - a short beep will sound, the card / keyfob is RECORDED if 2 short beeps are heard - the code of the card / keyfob is already recorded in the microcontroller's memory.
3 - Record the required number of cards or keyfobs, a maximum of 10.
4 - Turn off the power of the controller or pause for 30 seconds <
A short video about how I inserted the first copy into my computer - click
PS:
If you have interesting schemes, throw, I will implement as much as possible.
Who is interested in making a device for doors or something, here is the original: tyk
Source: https://habr.com/ru/post/116914/
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