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Punch Sensor Prototype

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    #16
    The more I go over physical sensor-based DSP systems, I the more I think you should digitize your signal before feeding it to the MC. It'll solve your Arduino protection problem, and provide a cleaner signal into it that can be more easily sampled and you'll lose very little analog signal, if any.

    ADCs are commonly used as pre filters for these kinds of sensor systems when the desired end result is a signal analysis.

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      #17
      Regarding "Pain receptors"...

      There is no such thing.
      "Nociceptors" are receptive to heat, tissue distortion and differences in pH.
      "Pain" isn't a measurable "thing" and is an output of the brain.

      http://www.bullshido.net/forums/showthread.php?t=121734

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        #18
        Originally posted by hungryjoe View Post
        Dr_Awesome,

        Are you using an accelerometer chip in your setup?
        No. For now, I am using the speed of compression of the crystals to measure the velocity, but I have been toying with the idea of using both, because right now I cannot tell if that is part of the reason for my high error rates, or if it is just the build itself. I picked up a cheap accelerometer to test out just in case, so maybe I will use it in next generations...

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          #19
          Originally posted by cereus View Post
          Now that it's been spelled out to me I am very interested in seeing where this goes. I never felt like force ever gave a clear picture.

          Can you give examples of what punches (perhaps to which targets) might require more "push" or "snap". I haven't done any striking for the past 10 years and tkd from 8-14 didn't really give me any real education in the matter.

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            #20
            Originally posted by W. Rabbit View Post
            The more I go over physical sensor-based DSP systems, I the more I think you should digitize your signal before feeding it to the MC. It'll solve your Arduino protection problem, and provide a cleaner signal into it that can be more easily sampled and you'll lose very little analog signal, if any.

            ADCs are commonly used as pre filters for these kinds of sensor systems when the desired end result is a signal analysis.
            http://playground.arduino.cc/CourseWare/AnalogInput

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              #21
              Originally posted by ChenPengFi View Post
              Regarding "Pain receptors"...

              There is no such thing.
              "Nociceptors" are receptive to heat, tissue distortion and differences in pH.
              "Pain" isn't a measurable "thing" and is an output of the brain.

              http://www.bullshido.net/forums/showthread.php?t=121734
              Shit.

              That was one of my favorite threads on here, by the way.

              I need to stop using that language, and I noticed I used it in a bullet point on the video too. It feels more efficient when I say it, but it paints a completely wrong mental picture of there being some special switch under the skin that makes you feel pain instead of the bigger picture where information is sent and output is based on context.

              Thanks.

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