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AN728: Remote Keyless Entry & Convenience Center Reference
Design with LIN Bus Interface - Microchip Application Note
Published 26-Sep-02 (app note) |
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Automatic Door Opener with PIC12c508 - This circuit can be
used to operate an electric strike or an electromagnetic lock on
a door. It is not the door being opened/closed, but a small
electromagnetic strike which unlocks the door. The opener has
the following features currently programmed in software...
(schematic) |
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Code Lock with ATMEL AVR - CodeLock AVR electronic
combination lock is realized with Atmel AVR microcontroller
AT90S2313 or ATtiny2313. Program in hex code is 2 kB long. User
code is consisted of 1 to 4 digits. If you buy the chip than
user code is consisted of 1 to 8 digits. If the code is entered
in the correct sequence, then after 1 second the relay and the
electric striker (in the door) switch on for 1 second and then
switch off again. User code can be changed via 3x4 matrix
keypad. Keypad for CodeLock can be bought at local electronic
shop. Initial user code (1234) is set up with a jumper. The
jumper must be inserted before the voltage (12V) connection. The
jumper must be removed after 2 beeps (after 5 to 15 seconds).
….(circuit design) |
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Combination Digital Lock - A multiple input combination
loack using CMOS counter IC's. Flexibility and code change is
allowed by changing output connections. (schematic / circuit
design) |
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Combination lock - Operate your gate or something different
by this simple electronic combination lock. The combination can
have a chosen length of numbers or alphabets, and can be changed
any time. The LCD display is optional, the circuit works fine
without it. After entering the correct combination, a relay is
operated for the predefined time.....(design) |
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Combination Lock (nutchip) - Combination lock are nice to
enable alarms, but are useful for controlling a wide range of
electric devices. These software keys can open gates, garages,
TV sets, telephones, VCRs, well pumps... In practice this
circuit is capable to lock or time all the devices that can be
connected to relays. (electronic design) |
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Combination Lock (PIC16F84) - (circuit) |
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Combination Lock for Car Liftgate - (circuit / schematic
design) |
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Combination Lock PIC16F84 - (electronic diagram) |
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Combination Lock-Digital - (electronic design) |
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Digital Combination Lock - (schematic / circuit design) |
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Digital Electronic Lock (Bill Bowden) - The digital lock
shown below uses 4 common logic ICs to allow controlling a relay
by entering a 4 digit number on a keypad. The first 4 outputs
from the CD4017 decade counter (pins 3,2,4,7) are gated. |
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Digital Electronic Lock circuitdb - The digital lock shown
below uses 4 common logic ICs to allow controlling a relay by
entering a 4 digit number on a keypad. The first 4 outputs from
the CD4017 decade counter (pins 3,2,4,7) are gated. |
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Digital Lock - A Simple But Very Effective
Circuit....(electronic schematic) |
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Door lock cancellation switch - This is the circuit where
can open the door of the car even if there be not a key. The
switch that cancels door lock is set up to the car |
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Electronic Card Lock System - (electronic Circuit /
Schematic) |
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Electronic Combination Lock (Randy Linscott) - This circuit
is very basic to build. To open a the lock which is connected to
the K1 Load you must press each momentary switch in the correct
sequence. The sequence used in this circuit is S1,S2,S3,S4. If
any of the other switches are pressed |
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Electronic Combination Lock AVR - (circuit / schematic
design) |
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Electronic Combination Lock with AVR - (electronic schematic
/ circuit) |
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Electronic door codelock PIC16F84 - (circuit design) |
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Electronic Lock - This is my electronic combination lock to
use with an outdoor gate. The functionality is implemented in
software. It turns on a relay (usually to open a door) for a few
seconds…. Uses a PIC16F84A (circuit) |
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Electronic Lock (Bill Bowden) - The digital lock shown below
uses 4 common logic ICs to allow controlling a relay by entering
a 4 digit number on a keypad. The first 4 outputs from the
CD4017 decade counter (pins 3,2,4,7) are gated. |
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Electronic Lock circuitdb - The digital lock shown below
uses 4 common logic ICs to allow controlling a relay by entering
a 4 digit number on a keypad. The first 4 outputs from the
CD4017 decade counter (pins 3,2,4,7) are gated. |
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Electronic Locker - This circuit is an Electronic Locker. It
is controlled by a switches combination (by a code). There is a
switch matrix on the door of the locker. This one is a unit of
switches connected into 4 arranged of 4 columns for a total of
eight terminals.....(circuit design) |
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Electronic Safety Lock Based on Attiny26 - This safety-lock
can be work with up to 8 different telecards (empty or not) as
access keys. Each tele card can be registered or unregistered
from the system, by press the corresponding
button.…(electronic circuit) |
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Enhanced Alarm Keypad - (schematic / circuit design) |
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iButton electronic lock Circuit - This electronic lock can
be used with any type of iButtons you may already have, since
the only thing needed is the internal serial number, that's
different for every iButton…..(circuit diagram) |
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Infrared gate 2 (Peter Jakab) - This is an infrared gate
with two sensors planned to use in the wall in the way behind a
door. It can be applied in a toilet to keep track of that
someone is inside exceeding a certain amount of time. After that
time elapsed, the circuit triggers the digital output which can
turn on a ventilator. The time period ....(electronic circuit) |
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Low Cost Digital Code Lock - (electronic Circuit /
Schematic) |
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Programmable Digital Code Lock - (electronic circuit) |
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Remote Door Lock (Seiichi Inoue) - …(circuit design) |
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Remote Keyless Entry & Convenience Center Reference Design with
LIN Bus Interface Microchip Application Note Published
26-Sep-02 (app note) |
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Safety-Lock with Telecard as Key - This safety-lock can be
work with up to 8 different telecards (empty or not) as access
keys. Each telecard can be registered or unregistered from the
system, by press the corresponding button.….(circuit design) |
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Simple Code Lock - (electronic Circuit / Schematic) |
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Simple combination lock - This experiment may be built using
only one 8-position DIP switch, but the concept is easier to
understand if two switch assemblies are used. The idea is, one
switch acts to hold the correct….(electronic design) |
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Simple Electronic 'Lock' - There are six (or more) push
switches. To 'unlock' you must press all the correct ones at the
same time, but not press any of the cancel switches. Pressing
just one cancel switch will prevent the circuit unlocking. When
the circuit unlocks it actually just turns on an LED for about
one second, but it is intended to be adapted to turn on a relay
which could be used to switch on another circuit.....Designed by
John Hewes (circuit) |
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Simple Low Cost Digital Code Lock - (electronic Circuit /
Schematic) |
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Single Button Lock Provides High Security - 03/04/99 EDN-Design
Ideas: Figure 1 is the block diagram of an easily programmed,
single-button combination lock. You operate the lock by using a
series of short and long pulses from a momentary switch that
masquerades as a doorbell button. The circuit uses inexpensive
CMOS logic. The retrigger able timer,.....(design idea) |
