Team 1: Jon Schwarz, Carlo Mesina, Mike Wei & Bill Bergquist Design Constraints

Updated PSSCs  An ability to use an RFID tag to identify a user.  An ability to receive user input about drink selection & drink size.  An ability to fill a cup to a user-specified amount with a user-specified beverage.  An ability to display user information (name, account funds, drinks purchased) and device statistics (keg fill level & temperature) on the onboard LCD.  An ability to communicate with a remote database to retrieve and manipulate user data.

Updated Block Diagram

Major Constraints  Price of components  Food-safe components  Refrigerator Choice  Computation  Power Constraints Non-Constraints

Microcontroller PIC24FJ128GB110PIC24F04KA201  $4.28  16-bit Architecture  4 UART  3 SPI  3 I2C  16K SRAM/128K Flash  84 I/O Pins  $1.27  16-bit Architecture  2 UART  1 SPI  1 I2C  512 SRAM/4K Flash  18 I/O Pins

Solenoid Valve ASCO U8256A108E ASCO U8256A104E  $48.00  NSF 61 & 169  1/8” Pipe  CV 0.17  Normally Closed  Direct Acting  $57.00  NSF 61 & 169  1/4” Pipe  CV 0.17  Normally Closed  Direct Acting ASCO U8256A104E  $57.00  NSF 61 & 169  1/4” Pipe  CV 0.15  Normally Closed  Direct Acting

LCD and Keypad CrystalFontz CFA635-TFE-KL Matrix Orbital GLT  20x4 LCD Display  Four bi-color indicator LEDs  RS-232 Interface  Integrated 6-button Keypad  83 mm x 28 mm Viewing Area  ~$77  Touch Screen  RS-232 Interface  Adjustable Baud Rate  108 mm x 58 mm Viewing Area  240 x 128 pixels  Upload/Create a Font  ~$220