Confidence in being able to:
  Detect voltage and capacitance
Concerns about having to:
  Detect waveform
Little said about having to:
  Detect temperature

Some discussion about meaning of RMS
  Square wave 5v RMS will go from about -5v to 5v
  Sawtooth wave 5v RMS will go from about -8.7v to 8.7v
The Arduino can measure from 0v to 5v

Communication concerns
  Multiple Arduino boards
  Arduino to sensor
  Protocols
    1-wire
    I2C (Inter-Intergrated Circuit)
    SPI (Serial Parallel Interface)

Programming
  Interfacing multiple Arduinos
  Can Arduino support Object-Oriented Programming
  Arduino operating system?

Movement
  Wheels
    macho wheels ??
    Omni wheels
  Sensor contact
    Turntable for the sensors
    Spring loaded