| List of needs in a ranked order (5=high, 1=low) | |
| Rank | Customer Need |
| 5 | RS-232 Interface |
| 5 | +5V Serial interface |
| 5 | Voice Synthesis |
| 5 | LCD (Text) |
| 5 | Drivers |
| 5 | Test Software |
| 4 | Touch Screen |
| 3 | >1 Mbyte Non-volatile Memory |
| 3 | LCD (Graphics and Animation) |
| 3 | Operating System |
| 3 | Input Devices |
| 2 | Content Downloader |
| 2 | Portable Power Supply |
Dr. Schwartz, after hearing my concept agreed to be my faculty sponsor. As the customer I need a robust multimedia interface to impress potential employers and for a future robot. This product needs to be audibly and visibly impressive as well as dependable. This device needs voice synthesis, a large display, input devices, and more than 1 Mbyte of non-volatile memory to store software content. Computer and micro-controller interfaces are also needed to download new content as well as future expansion. The mother-board needs to be designed using Protel and then cut, populated, and debugged. Software is needed for testing, debugging, and driving the system. Battery power is need for portability.
| Project Design Specification | Value or Range |
| LCD | 240 pixels X 128 pixels |
| LCD Driver | >30 char/sec. |
| Voice Synthesizer | >10,000 words |
| Voice Synthesizer Driver | >50 words/min. |
| Touch Screen | 5.25 x 4 in. |
| Memory | >1 Mbyte Non-volatile |
| RS-232 Interface | 9600 baud |
| +5V Serial interface | 9600 baud |
| Content Downloader | 9600 baud |
| Portable Power Supply | >1 hour supply |
| Project Design Specification: | Value or Range: | Method of Verification |
| LCD | 240 pixels X 128 pixels | This was a device parameter specified in this devices data sheet and verified by filling the display with 40 x 16 characters each 6 x 8 pixels in size. |
| LCD Driver | >30 char/sec. | The time taken to send a full screen of characters (40 x 16) was measured to verify this specification. |
| Voice Synthesizer | >10,000 words | The voice synthesizer can reproduce any number of words, due to the fact words can be spelled phonically. This was verified by example. |
| Voice Synthesizer Driver | >50 words/min. | This was verified by sending 50 words of average length and timing the transfer rate. |
| Touch Screen | 5.25 x 4 in. | This was a device parameter specified in this devices data sheet and was measured using a ruler. |
| Memory | >1 Mbyte Non-volatile | Not verified |
| RS-232 Interface | 9600 baud | This was verified by interfacing the talking computer to several different computers using Hyper Terminal set at 9600 baud. |
| +5V Serial interface | 9600 baud | |
| Content Downloader | 9600 baud | Not verified |
| Portable Power Supply | >1 hour supply | The device was operated for a full hour and a half using the portable power supply. |
| Project Design Specification: | Value or Range: | Extent to Which the Specifications Were Met: |
| LCD | 240 pixels X 128 pixels | Pass: The LCD is the required size |
| LCD Driver | >30 char/sec. | Failed: The transfer rate was found to be 21.3 char/sec which is less than the desired >30 char/sec. |
| Voice Synthesizer | >10,000 words | Pass: By spelling a word phonically any word can be synthesized. |
| Voice Synthesizer Driver | >50 words/min. | Pass: The transfer rate was found to be 73.4 words/min which is more than the desired >50 words/min. |
| Touch Screen | 5.25 x 4 in. | Pass: The touch screen was measured and found to have an active area of 5.25 x 4 in. |
| Memory | >1 Mbyte Non-volatile | Failed: Flash memory was not fully implemented |
| RS-232 Interface | 9600 baud | Pass: Communication was established at 9600 baud. |
| +5V Serial interface | 9600 baud | |
| Content Downloader | 9600 baud | Failed: The content downloader was not fully implemented. |
| Portable Power Supply | >1 hour supply | Pass: The Batteries used in the 1.5 hour test are still in use and have powered the device for about two more hours |
The project was packaged in a customized plastic toolbox. The removable
tray of the toolbox was cut so it would hold the LCD, touch screen, three
toggle switches, one push button switch, 25-pin female RS-232 connector,
15-pin PC gamepad connector, and a terminal block. The electronics, batteries,
and speaker where then stored below this tray.
| Part Description | Actual Cost | Projected Cost |
| Voice Synthesizer | $160.00 | $160.00 |
| LCD | $190.00 | $190.00 |
| Inverter for LCD | $16.00 | $16.00 |
| Memory | $30.00 | $30.00 |
| HC11 EVBU | $68.11 | $150.00 |
| Touch Screen | $0.00 | $70.00 |
| Tool Box | $5.00 | $5.00 |
| Switches | $6.00 | $6.00 |
| Batteries | $30.00 | $30.00 |
| Misc. | $100.00 | $200.00 |
| Total | $605.11 | $857.00 |
| 24 Sept | Wk 2 | Wk 3 | Wk 4 | Wk 5 | Wk 6 | Wk 7 | Wk 8 | Wk 9 | Wk 10 | 3 Dec | |
| Part Accusation | X | X | X | X | X | X | X | ||||
| Prototype the Voice Synthesizer Interface to the HC11 | X | ||||||||||
| Prototype the LCD Interface to the HC11 | X | X | X | ||||||||
| Design the Memory Module Board | X | X | |||||||||
| Interface Input Devices | X | X | |||||||||
| Design and Build the Processor Board | X | X | X | X | |||||||
| Design Portable Power Supply | X | X | |||||||||
| Design and Build a Case or Mount | X | X | |||||||||
| Develop Drivers | X | X | X | X | X | X | X | X | X | ||
| Develop Downloader | X | X | |||||||||
| Develop an Operating System | X | X | X | X | X | ||||||
| Develop Demo Applications | X | X | X |
Select and purchase a voice synthesizer and LCD that meets the project requirement.
Technical Description:
The following parts are needed for this project:
| Voice Synthesizer: | Capable of taking input through a SCI or memory mappable interface and produce understandable audible voice output. |
| LCD: | Must have a built in driver and be 240 pixels X 128 pixels in size. Also be sure to get the backlighting inverter. |
| Touch Screen: | Capable of producing output that can be sent to the HC11 through a SCI or memory mapped input and have the dimensions 4 in. X 2.5 in. |
| Memory: | More than 1 megabyte of non-volatile RAM |
Interface the voice synthesizer (V600) to a HC11 EVBU board and write driver software to learn how the voice synthesizer works and how it should be done in the final product.
Technical Description:
The V600 is to interface to the HC11 as if it where a 1 byte memory device. Decoding the address lines to provide the proper chip select signals (RE and WR) is required. Attach power (+5v), ground, the RE and WR signals, the data bus, and a speaker to the V600. Write software to drive the V600.
Interface the LCD display to the EVBU board and write driver software to gain understanding about how it works and how it should be interfaced in the final product.
Technical Description:
Read all of the documentation on the LCD and develop an understanding
of the power and voltage requirements. Power and memory map the LCD to
the EVBU in a similar manner as the V600. Take great care not to burn this
expensive device. Write drivers to test and debug the LCD.
Design and build a memory board capable of braking the one megabyte or more of RAM into smaller blocks that the HC11 can handle.
Technical Description:
This board will hold the one megabyte or more of non-volatile RAM and the paging circuit. The board will use a PAL or similar logic array device to page through the memory.
Interface the input devices to the EVBU board and create software drivers for them.
Technical Description:
Interface the touch screen and other input devices to the EVBU board using memory mapping and HC11 A-D system. Write software drivers for each device as well as a sample application. Potential input devices include: PC game-pad, potentiometer, keypad, keyboard, switches, dials, and buttons.
Use Protel to design a processor board that will be a more permanent replacement for the wire rapped EVBU board. This board should meet all of the needs of the project including the SCI and RS-232 interfaces. It should also have headers for all the interfaced devices already interfaced with the EVBU.
Technical Description:
This board should provide everything the HC11 needs to operate as well as:
Design and build portable power supply capable of:
This system needs to provide regulated +5V, +12V, and -12V. Monitoring the battery level can be accomplished by providing an analog signal created by dividing the unregulated battery voltage to one of the A-D input ports on the HC11.
Design and build a case or mount capable of securely holding and meeting the special needs of all of the systems components.
Technical Description:
This case should have:
Write, debug, and test software drivers for all input and output devices used in the system.
Technical Description:
Each driver should be capable of fully utilizing the device it is designed for and use as few global variables as possible. The driver should also include testing and initializing software for its intended device.
Due to the large amount of paged memory, a special down loading program will be needed to transfer content and software to this device.
Technical Description:
This downloader will need to be capable of paging through the memory as it stores data and code on the large memory device. It will also need to meet the special writing needs of the FLASH memory.
This operating system should integrate the memory paging system as well
as all of the drivers. It should also be able to initialize and check the
status of all the components in the system.
Technical Description:
The devices used work independently of each other and thus the system should not require much integrating. The operating system should simply be the collection of drivers that have been designed and tested as to not interfere with the other drivers and their devices. It should also include a driver for paging through memory.
Write, test and debug code that will show most if not all of the capabilities of this device.
Technical Description:
Possible applications include:
