Sculpture III, Spring 2012

17 February 2012

ELECTROMAGNETISM!!!: electricity, switches, motors & power!!!

* Basics: electricity & switches

• ELECTRICITY

  http://music.columbia.edu/~douglas/classes/electronics_workshop

  • voltage (volts)
  • current (amps, current)
  • power (watts)
  • resistance (ohms)
  • continuity
  • short circuit
  • polarity (+ and -)
  • ground (gnd)
  • AC/DC
  • the multimeter
• SWITCHES

  http://en.wikipedia.org/wiki/Switch

  • SPST
  • SPDT
  • DPST
  • DPDT
  • normally open/normally closed
  • contact ratings

AFTERNOON

* Motors & power

• MOTORS

  http://music.columbia.edu/~douglas/classes/motor_mania
  http://www.ladyada.net/make/mshield (we'll use this driver for class demos)

  • electromagnet
  • AC motor
  • DC motor
  • gearhead motor
  • hobby servo
  • stepper motor
  • solenoid
  • relay
  • RPM
  • torque (oz. inches, ft. lbs., etc.)
  • PWM (pulse width modulation)
  • shaft coupler
• POWER SOURCES

  Batteries, wall warts, regulated supplies
  Other power options: solar, wind, steam, etc.

ASSIGNMENT:

Make a switch. Use it to turn something on and off!