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Electronic combination lock kit featuring the LS7222 w/ 16-button keypad COOL!
This is a listing for an electronic combination lock DIY Electronics kit that we developed using the LS7222 combination lock IC as a platform. Functional instructions are all given in the video above. The video shows you a full demonstration of how to use this board, and how to reprogram the ARM/DISARM/DURESS codes. We sell these kits with membrane keypads, and with button keypads (This version). There are step-by-step assembly instructions located below in the second video. Be sure to watch it, as you have to solder it all together yourself. If you are interested in this listing, please watch the video below, as soldering is required by the buyer. We are selling this kit in four different variants:
1) Fully Assembled & Tested With 16-Digit Membrane Keypad
2) Fully Assembled & Tested With 16-Digit Button Keypad
3) Kit Form (Unassembled) With 16-Digit Membrane Keypad
4) Kit Form (Unassembled) With 16-Digit Button Keypad (This Listing)
There is a two pin terminal block on board that is used to power the device. There is an on board 5v regulator that brings the supply down to a regulated 5v. There are 7x output pins that are discussed in the video above, and in words below. There is also a DC ground pin, and a regulated 5v pin for easy interface with an external circuit. There are also six mounting holes so that you can easily mount this device to your project box.
Output Pins:
LOCK-D: The logic on this pin is represented by the on board RED Lock LED. When this light is on, the Lock-D output will be high.
/LOCK: This line latches high when the DISARM code is entered into the system. When the device receives the ARM code, this line latches low.
DISARM: This line goes high momentarily, then low again when the DISARM or DURESS code is entered. It stays high for just under a second.
ALARM: This line latches high if the DURESS code is entered.
ARM: This output goes high for just under a second, then low again once the ARM code is entered.
TAMPER: This is a very useful line. This line goes high for just under a second when an incorrect digit is entered.
PROG: The logic on this pin is represented by the on board GREEN PROG LED. When this LED is on, the PROG output will be high.
GND: This is a ground line connection. If you are interfacing with another circuit, you have to make sure that the grounds of each circuit are connected.
VCC: This is a regulated 5v line that can be used to power external devices (Up to 600mA)
Default Codes For Button Keypad Version (NOT MEMBRANE VERSION):
Upon power on, the default codes are as follows (Button numbers start with an "S" for "Switch"::
ARM Code: S13, S14, S10, S9
When this code is entered, the /LOCK output pin logic latches low, and the ARM output goes high for just under a second, then goes low again.
DISARM Code: S13, S14, S10, S14
When this code is entered, the /LOCK output pin logic latches high, and the DISARM output goes high for just under a second, then goes low again.
DURESS Code: S13, S14, S10, S13
When this code is entered, the ALARM output latches high, and the disarm output goes high for just under a second, then goes low again.
Program Mode:
If you want to re-program your codes, you can, but default codes will be re-established if power is removed from the device. If you want to re-program during operation, you can do so many times, but you have to program in new codes for all three codes. You cannot only program in one code.
In order to enter into program mode, you have to enter the current DISARM code, followed by (S1, S1)), so "S13, S14, S10, S14, S1, S1". When you do this, the green PROG LED should light up. As well, the PROG output should latch high, and stay high as long as you are in program mode. From here, you have to enter in a 6-digit code. The first three digits are common between all three codes. The fourth digit is the final digit in the new ARM code. The 5th digit is the final digit in the new DISARM code, and the 6th digit is the final digit in the new DURESS code. For instance:
I type "1251**" after power up, and the green PROG LED lights up. I then type "S4, S5, S6, S7, S8, S9", and the green LED turns off. I'm now back in normal mode.
My new ARM code is "S4, S5, S6, S7"
My new DISARM code is "S4, S5, S6, S8"
My new DURESS code is "S4, S5, S6, S9"
You see that the first three numbers are common, and the final three digits are used for the final digits on the three new codes.
Features:
1) 16-digit keypad matrix
2) User programmable option (user can program and reprogram at will)
3) Three codes: ARM/DISARM/DURESS
4) Seven output lines for MCU interface (ARM/DISARM/LOCK/TAMPER/ALARM)
5) Regulated 5v output pin and ground pin for peripheral interfacing
6) LOCK output can be interfaced with our DIY relay kit to activate AC power devices.
Datasheet:
http://www.datasheetcatalog.com/datasheets_pdf/L/S/7/2/LS7222.shtml
Requirements:
1) Power Supply: 7VDC - 12VDC (regulated to 5VDC on the board)
2) Soldering Iron/Solder
3) Attention To Detail!
Applications:
Security systems
Door Locking devices
Safe circuits
Use your imagination!
Assembly Video:
1) Fully Assembled & Tested With 16-Digit Membrane Keypad
2) Fully Assembled & Tested With 16-Digit Button Keypad
3) Kit Form (Unassembled) With 16-Digit Membrane Keypad
4) Kit Form (Unassembled) With 16-Digit Button Keypad (This Listing)
There is a two pin terminal block on board that is used to power the device. There is an on board 5v regulator that brings the supply down to a regulated 5v. There are 7x output pins that are discussed in the video above, and in words below. There is also a DC ground pin, and a regulated 5v pin for easy interface with an external circuit. There are also six mounting holes so that you can easily mount this device to your project box.
Output Pins:
LOCK-D: The logic on this pin is represented by the on board RED Lock LED. When this light is on, the Lock-D output will be high.
/LOCK: This line latches high when the DISARM code is entered into the system. When the device receives the ARM code, this line latches low.
DISARM: This line goes high momentarily, then low again when the DISARM or DURESS code is entered. It stays high for just under a second.
ALARM: This line latches high if the DURESS code is entered.
ARM: This output goes high for just under a second, then low again once the ARM code is entered.
TAMPER: This is a very useful line. This line goes high for just under a second when an incorrect digit is entered.
PROG: The logic on this pin is represented by the on board GREEN PROG LED. When this LED is on, the PROG output will be high.
GND: This is a ground line connection. If you are interfacing with another circuit, you have to make sure that the grounds of each circuit are connected.
VCC: This is a regulated 5v line that can be used to power external devices (Up to 600mA)
Default Codes For Button Keypad Version (NOT MEMBRANE VERSION):
Upon power on, the default codes are as follows (Button numbers start with an "S" for "Switch"::
ARM Code: S13, S14, S10, S9
When this code is entered, the /LOCK output pin logic latches low, and the ARM output goes high for just under a second, then goes low again.
DISARM Code: S13, S14, S10, S14
When this code is entered, the /LOCK output pin logic latches high, and the DISARM output goes high for just under a second, then goes low again.
DURESS Code: S13, S14, S10, S13
When this code is entered, the ALARM output latches high, and the disarm output goes high for just under a second, then goes low again.
Program Mode:
If you want to re-program your codes, you can, but default codes will be re-established if power is removed from the device. If you want to re-program during operation, you can do so many times, but you have to program in new codes for all three codes. You cannot only program in one code.
In order to enter into program mode, you have to enter the current DISARM code, followed by (S1, S1)), so "S13, S14, S10, S14, S1, S1". When you do this, the green PROG LED should light up. As well, the PROG output should latch high, and stay high as long as you are in program mode. From here, you have to enter in a 6-digit code. The first three digits are common between all three codes. The fourth digit is the final digit in the new ARM code. The 5th digit is the final digit in the new DISARM code, and the 6th digit is the final digit in the new DURESS code. For instance:
I type "1251**" after power up, and the green PROG LED lights up. I then type "S4, S5, S6, S7, S8, S9", and the green LED turns off. I'm now back in normal mode.
My new ARM code is "S4, S5, S6, S7"
My new DISARM code is "S4, S5, S6, S8"
My new DURESS code is "S4, S5, S6, S9"
You see that the first three numbers are common, and the final three digits are used for the final digits on the three new codes.
Features:
1) 16-digit keypad matrix
2) User programmable option (user can program and reprogram at will)
3) Three codes: ARM/DISARM/DURESS
4) Seven output lines for MCU interface (ARM/DISARM/LOCK/TAMPER/ALARM)
5) Regulated 5v output pin and ground pin for peripheral interfacing
6) LOCK output can be interfaced with our DIY relay kit to activate AC power devices.
Datasheet:
http://www.datasheetcatalog.com/datasheets_pdf/L/S/7/2/LS7222.shtml
Requirements:
1) Power Supply: 7VDC - 12VDC (regulated to 5VDC on the board)
2) Soldering Iron/Solder
3) Attention To Detail!
Applications:
Security systems
Door Locking devices
Safe circuits
Use your imagination!
Assembly Video: