S14: Android based Automation
Contents
Grading Criteria
- How well is Software & Hardware Design described?
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- Code Quality
- Overall Report Quality:
- Software Block Diagrams
- Hardware Block Diagrams
- Schematic Quality
- Quality of technical challenges and solutions adopted.
Project Title
ANDROID BASED AUTOMATION
Abstract
This project is to develop an Android application which can be used to switch an electrical appliance On/Off, and notify the status to the user through his mobile device. Here we connect an Android Application running device to the SJSU One board using Bluetooth protocol and make the board detect the signals coming from the Android device via a Bluetooth module. This board generates operation in according to the incoming signals.
Objectives & Introduction
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Team Members & Responsibilities
- Bhargava Kunchanapalli
- (Hardware Implementation)
- Harsha
- (Android Development)
- Kiran Vaddey
- (Device Drivers and FreeRTOS Programming)
Schedule
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Schedule
| Date | Task | Status | Notes | |
| 2/24 | Project Reviewing | Completed | ||
| 3/6 | Parts Ordered | Completed | ||
| 3/13 | Review Data sheets & Bluetooth module interfacing | Completed | ||
| 3/20 | Installation of Android SDK and Designing a blue print of the application | Completed | ||
| 3/27 | Android Application development (Continued...) | Completed | ||
| 4/3 | Interfacing the mobile application with SJ-One Board using Bluetooth module | Completed | ||
| 4/10 | Setup the interface between the SJ-One Board and External Peripherals | Completed | ||
| 4/17 | Improving software functionality on Unique Features | Completed | ||
| 4/24 | Testing and Debugging | Completed | ||
| 5/1 | Testing and Debugging | Completed | ||
| 5/8 | Final Demo | Pending |
Parts List & Cost
| Qty | Description | Total Cost |
|---|---|---|
| 1 | HC - 05 Bluetooth UART Module | $10.00 |
| 1 | SJ One Board | $160.00 |
| 1 | Relay Module | $10.00 |
| 1 | Any Android Phone | $0.00 |
| Total Cost | 180.00 |
Design & Implementation
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Hardware Design
Electrical Switching Circuitry The electrical switching is done using a circuitry which uses relays to switch the lines. The voltage we handle here is 110V and frequency 60Hz. The transistor used in here produce sufficient current that is approximately 200V with a voltage supply of 9V rather than traditional 5V supply with drives less current when used against SJSU One board and it is used to switch the operation of the relay. The 3.3V supplied by the SJSU One board from the GPIO port is not sufficient to power the relay so the relay control board is been used in this project. As seen below, the circuit consists of a transistor, an LED, and a power supply.
The LED is connected to the control signal to show whether the relay should be turn on or turn off. The transistor acts as a switch to enable and disable the relay depending on the signal received from SJ One board. When the LPC 1768 gets the data frame from the Android application it processes it for signal and pass code where signal is processed in switch_task in our program to act accordingly. The pass code is matched against the codes which are pre assigned to identify the user.
Hardware Interface
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Software Design
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Implementation
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Testing & Technical Challenges
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My Issue #1
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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
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Appendix
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