Re: Pulse Sensor: an Open Source Heart-rate Sensor that Rocks by Yury Gitman � Kickstarter
walter.bender at gmail.com
Wed Jul 20 06:40:47 EDT 2011
On Wed, Jul 20, 2011 at 12:33 AM, <forster at ozonline.com.au> wrote:
> You can do something similar by placing a finger over the camera and shining a light on your finger.
> Unfortunately TurtleArt is a little slow to capture your pulse, the following executes a cycle in about 0.5 sec on a XO1.5
> show camera
> read pixel
> show heap
> empty heap
> This prints the rgb of one pixel centre image ( which is OK because the image is out of focus)
> print brightness
> averages over the image and takes round 2 seconds
I have a partially complete refactoring of the camera code that should
speed things up; in the meantime, I wonder if a simple resistive light
sensor run through the mic input wouldn't do just as well.
I also have a vague memory of someone trying something similar using
audio and the Measure activity.
>> Minus the Arduino, can this plug into the audio/mic port?
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