RE: Pulse Sensor: an Open Source Heart-rate Sensor that Rocks by Yury Gitman � Kickstarter
Alan Jhonn Aguiar Schwyn
alanjas at hotmail.com
Thu Jul 21 20:09:22 EDT 2011
Guzman (in Uruguay) make an prototipe that run on XO with the Turtle Art Activity:
> Date: Wed, 20 Jul 2011 23:28:57 -0400
> Subject: Re: Re: Pulse Sensor: an Open Source Heart-rate Sensor that Rocks by Yury Gitman � Kickstarter
> From: walter.bender at gmail.com
> To: forster at ozonline.com.au
> CC: devel at lists.laptop.org
> So cool.
> On 7/20/11, forster at ozonline.com.au <forster at ozonline.com.au> wrote:
> >> 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.
> > A cadmium sulphide photoresistor (ORP12 equivalent) worked OK measuring
> > resistance in Turtle art
> > Cover cell with little finger and hold near bright light. Pulse gives +-50
> > ohms in 3000 ohms.
> > Screenshot attached
> Walter Bender
> Sugar Labs
> Devel mailing list
> Devel at lists.laptop.org
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