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Door-lock software for the Raspberry Pi using GPIOs

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Raspberry Lock
===============

The raspberry lock is a small application that runs on a Raspberry Pi with a
PiFace shield. It reads a 4-digit user-ID and a 4-6 digit passcode from a 4x4
matrix keypad. It then sends this data to a LDAP server to check if the
entered user-id and passcode combination is correct. If the server answers with
"correct", a door is opened by switching on an electric strike with a relais.

Installation
--------------

Install the piface module with the Raspberry Pi configuration tool:
```
sudo raspi-config (then follow the menu to Advanced -> SPI)

sudo apt-get install python3.2 python3.2-dev build-essential
sudo apt-get install libldap-2.4-2
sudo ln -s /usr/lib/arm-linux-gnueabihf/libldap_r-2.4.so.2 /usr/lib/arm-linux-gnueabihf/libldap.so
sudo ldconfig
sudo apt-get install python3-setuptools
sudo apt-get install python3-pifacedigitalios

git clone http://git.jaseg.net/python-lmap.git
cd python-lmap
python3 setup.py install
```

Now clone this repository and change into its subdirectory.

Copy ```config.py.sample``` to ```config.py``` and change the password/binddn/pin field/group membership test for your application.

How To Run It
----------------

```
python3 schloss.py
```

Usage
----------------

Press A, then enter your 4 digit UID code, then press A again. Now enter your 4-6 digit PIN code and hit A.
If the code was correct, the door will open.

Hardware-Setup
----------------
```
+-----------------------------------------------------------------------+
|+---------------------------------------------------------------------+|
||+-------------------------------------------------------------------+||
|||+-----------------------------------------------------------------+|||
||||  +------+.................                                      ||||
||||  |      |                :                   +---------------+  ||||
|||+---+0    |  RASPBERRY PI  :                   |    KEYPAD     |  ||||
||+----+1    +--------+       :                   |               |  ||||
|+-----+2             |       :                   | 1   2   3   F |  ||||
+------+3             |       :                   | 4   5   6   E |  ||||
      |+4             +-------+                   | 7   8   9   D |  ||||
      |+5                     |                   | A   0   B   C |  ||||
      |+6                     ^                   |               |  ||||
      |+7                     |                   |               |  ||||
      |+0V                    +                   +---++++-++++---+  ||||
      |                       |    to LEDs            |||| ||||      ||||
      |                       |      ^ ^              |||| |||+------+|||
      |        PIFACE         |   Red| |Green         |||| ||+--------+||
      |                       |      | |              |||| |+----------+|
      |                       |      | |              |||| +------------+
      | ++                  7+-------+ |              ||||
      | ||                  6+---------+              ||||
      | ||                  5+------------------------+|||
      | ||                  4+-------------------------+||
      | ||  +----+ +----+   3+--------------------------+|
      | ||  |    | |    |   2+---------------------------+
      | ||  | R0 | | R1 |   1 |
      | ||  |    | |    |   0 |
      | ++  +----+ +----+ GND |
      |   .. +++    +++  +++ :|
      +-------------||--------+	        +-------------+
                    |+------------------| DOOR OPENER |-----+ +7.5V DC
                    |		            +-------------+
                    +---------------------------------------+ - (GND)
```

Additional Links
--------------------

* PiFace documentation: http://www.farnell.com/datasheets/1684425.pdf
* The keypad that we used looks somethink like this: http://uk.farnell.com/eao/eco-16250-06/keypad-4x4-matrix-0-02a-24v-plastic/dp/1130806

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