F12: Android Door Lock
Contents
Android Door Lock
Abstract
Using a Wifi connection, our door lock can be locked and unlocked remotely with an Android device.
Introduction & Features
- UART communication between RN-XV WiFly Module and LPC2148 Microcontroller.
- Andriod application that enables wireless door access.
- WiFly module for wireless communication between Android and LPC2148 Microcontroller.
- TCP communication running on LPC2148 handling requests from the Android application.
- Web server to handle user permission, to set door codes, and to view time stamps of when the door was accessed.
- MP3 player that allows customizable tunes to play when the door is unlocked.
- Filing system that stores all the log times that the door has been accessed.
- Electronic door strike that unlocks when door code is recognized.
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Team Members & Responsibilities
- Rosemary Chen
- Created the UART1 driver that enables communication between the wireless module and the micro controller.
- Created the Real Time Clock driver used for logging the time that users access the door.
- Created the user interface for setting and configuring the wifly module as well as automating the default settings for network connection.
- Created a task for
- Correct password detection
- Enabling the lock when password is detected
- Logging the time when the door is accessed
- Playing a tune when the door is unlocked.
- Cindy Li
- Created the web server that allows the host to track door users, enable or disable users, and sets the door code.
- Hai Wang
- Create a TCP client Android application that allows connectivity between the wireless module (server) and the Android application (client). The application is responsible for sending the correct door code to the server in order for the door to unlock.
Schedule
Show a simple table or figures that show your scheduled as planned before you started working on the project. Then in another table column, write down the actual schedule so that readers can see the planned vs. actual goals. The point of the schedule is for readers to assess how to pace themselves if they are doing a similar project.
| Week Number | Scheduled Items | Actual |
|---|---|---|
| November 2, 2012 |
|
Done |
| November 9, 2012 |
|
Done |
| November 16, 2012 |
|
Done |
| November 23, 2012 |
|
Done |
| November 30, 2012 |
|
Done |
| December 7, 2012 |
|
In progress |
| December 14, 2012 |
|
In progress |
Parts List & Cost
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| Parts | Cost |
|---|---|
|
Nexus 7 Android Tablet |
$249.00 |
|
RN-XV WiFly Module x3 |
$34.95 x3 |
|
Electric Door Strike |
$12.00 |
|
LPC2148 Microcontroller |
$60.00 |
**Cost excludes shipping and handling
Design & Implementation
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Hardware Design
Discuss your hardware design here. Show detailed schematics, and the interface here.
Hardware Interface
In this section, you can describe how your hardware communicates, such as which BUSes used. You can discuss your driver implementation here, such that the Software Design section is isolated to talk about high level workings rather than inner working of your project.
Software Design
Show your software design. For example, if you are designing an MP3 Player, show the tasks that you are using, and what they are doing at a high level. Do not show the details of the code. For example, do not show exact code, but you may show psuedocode and fragments of code. Keep in mind that you are showing DESIGN of your software, not the inner workings of it.
Implementation
This section includes implementation, but again, not the details, just the high level. For example, you can list the steps it takes to communicate over a sensor, or the steps needed to write a page of memory onto SPI Flash. You can include sub-sections for each of your component implementation.
Testing & Technical Challenges
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Include sub-sections that list out a problem and solution, such as:
Wifi Connection Issues
Many wifi connection issues were encountered. To solve this problem, a dedicated task was created to re-connect to wifi if the connection was ever lost.
Conclusion
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Project Video
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Project Source Code
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References
Acknowledgement
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References Used
- Android Developers Website: http://developer.android.com/index.html
- RN-XV Wireless Module User Manual: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Wireless/WiFi/WiFly-RN-XV-DS.pdf
- TO-98 : http://www.classiccmp.org/rtellason/transdata/2n3858.pdf
Appendix
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