1. Software Design Narrative
Drink Master 8000
Stephen Zabrecky
Software Design Narrative

2. Drink Master 8000
Creates a variety of water-based drinks from powders stored in the device.
Two holding tanks for storage of multiple beverages.
Device can self-clean, so solution cross contamination is eliminated.

3. Project Specific Success Criteria (PSSC)
Description 1
An ability to control the (de)activation of motors and flow of water / powder in the device. 2
An ability to view the status of the components of the device and sensor readouts on a PC. 3
An ability to create drinks at a specified time using an on-board timer circuit. 4
An ability to communicate with a user via LCD screen and a rotary pulse generator / touch screen. 5
An ability to maintain the temperature of a holding tank.

4. Software Development Status
Platform of Choice: Mac OS X + Objective C
Backup Platform: Visual Basic on Windows
Transmitting serial data with Bluetooth module is the biggest hurdle to software success (for both platforms)
Bluetooth Module
Connected to microcontroller via UART
“Connected” to the Computer as an RS-232 serial port

5. Remote Software Microcontroller
Receiving: Continuously polling Bluetooth connection for a packet of status indicators for internal components
Transmitting: A packet opcodes that will be decoded in the microcontroller
Microcontroller
Receiving: Interrupt driven for opcode commands over Bluetooth from the remote software (PC) and/or the RPG (embedded hardware controls)
Transmitting: Polling internal components and then sending a “status” packet over Bluetooth to PC
Deciding: While polling tank status, decide whether to heat or cool beverages and sustain normal operating status.

6. Visual Basic “Backup”

7. Objective C App Delegate RootWindowController Custom NSView* Custom
* Custom NSViews (acting as windows) have many more animation options
RootWindowController
Custom
NSView*
Custom
NSView*
Custom
NSView*
ViewController
ViewController
ViewController

8. App Delegate
RootWindowController
ViewController
Custom
NSView*
NSView
Buttons
Images
* Custom NSViews (acting as windows) have many more animation options

14. Questions/Comments?