Classes/2010/VIS147A/offcuts

Week 8 - Motors, Coils, Inductors

• Reference: MedTech
  • http://www.swharden.com/blog/2009-08-14-diy-ecg-machine-on-the-cheap/
  • artificial facial muscles - http://archfaci.ama-assn.org/cgi/content/abstract/12/1/30?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=Tollefson&searchid=1&FIRSTINDEX=0&sortspec=date&resourcetype=HWCIT
    • http://www.ucdmc.ucdavis.edu/newsroom/newsdetail.html?key=3626&svr=http://www.ucdmc.ucdavis.edu&table=published
  • other
    • Transcranial Magnetic Stimulation (TMS)
      • http://transcenmentalism.org/OpenStim
    • Electronic Muscle Stimulation (EMS)
  • MedTech
  • wireless stethoscope
    • http://www.freedomscope.com/
    • http://solutions.3m.com/wps/portal/3M/en_US/Littmann_3100_3200/stethoscope/?#Model3200
• Lecture 8:
• Homework 8:
• Lab 8:

Sound/Tone Generation! For Sound People (optional)

An analog output, different from the light dimmer. To make a varying sound, you would want to change the frequency of the output signal, not the amplitude.

• This is more like the light blinking from part one, where changing the input voltage will change the rate of the light. But now you will do it with a Piezo, adjusting the time delay in microseconds.
• If you like sound, try this: http://www.arduino.cc/en/Tutorial/PlayMelody, I have a piezo you can use. (Or you can get one at RadioShack).
• This example adjusts the frequency of the output (tone) not the magnitude.
• the light fading above (analogWrite()) adjusts the brightness of the light (magnitude) with PWM.