Here is a list of all of the parts needed to do all of the work in the book with the chapter they are first used in. You can cut the cost down significantly by sourcing products through ebay or surplus electronic places.
  • Chapter 1
    • Arduino Uno
    • Arduino + Breadboard holder
    • Breadboard
    • LEDs
    • 330 Ohm 1/4 Watt resistors
    • Jumper Wires
    • USB Flash memory with all software
    • USB Cable
    • Parts box
    • 9V battery case
    • 9V battery
  • Chapter 2 - NO NEW ITEMS
  • Chapter 3
    • Push Buttons (2)
    • 10k Pot with knob (3)
    • RGB LED
  • Chapter 4
    • Speaker
  • Chapter 5
    • Temp sensor (TMP36)
    • LCD (84x48 graphical)
    • Voltage Converter board
      This is a link to the Eagle file to get the pcb made. You can also just use a voltage converter chip as described here.
  • Chapter 6 - NO NEW ITEMS
  • Chapter 7
    • Piezeo (knock) Sensor
    • 1M Ohm resistor
    • Reed switch
    • magnet
    • Photo cell sensor
    • 10k Ohm resistor
    • Tilt switch
  • Chapter 8
    • Servos
    • joystick on Breakout board
    • Pan tilt bracket
    • Rubber band firing mechanism - I cut a piece of acrylic out on a laser cutter with this pattern. You could make it out of just about anything.