Automatic Halloween Candy Dispenser

Step 4 Main Box

The main program runs in the Arduino Duemilanove.  When the board is initialized it immediately makes a Web call to check for the current code and displays it on the LCD screen.

The main loop is waiting for either a physical push of the big red button or to receive a remote serial message. The attached XBee module communicates with another XBee module connected to the ioBridge IO-204 module serial board.

These are the digital I/O pins configuration:

• XBee Module (with adafruit XBee kit)
  • Pin 13 - TX 
  • Pin 12 - RX
  • Gnd and 5v
• Big Dome Push Button
  • Pin  8 - Button NO(normally open) +  GND + 100K. 
  • 5v - COM
• Servo 1 (continuous rotating servo used for shaking)
  • Pin  7 - Data
  • Gnd and 5v
• Servo 2 (used to rotate the CD)
  • Pin 6 - Data
  • Gnd and 5v
• X10 C17A (x10 devices controller)
  • Pin  3 - DTR line for C17A - DB9 pin 4
  • Pin  2 - RTS line for C17A - DB9 pin 7
  • Gnd  - DB9 pin 5
• ioBridge 16x2 serial LCD display
  • Pin 1 - LCD Data pin
  • Gnd and 5v

Attached is the Arduino Sketch, it also includes a library to control the ioBridge LCD screen.