Hello all, Back when I had much more time and less knowledge, I was working on designing a similar device. While the design didn't progress into a prototype due to lack of interest by other developers and lack of knowledge on my end, there's a large wikipage on TeleHealth_Hardware that's available for other people working on similar projects to add to. Could everyone working on a health-related peripheral go to <a href="http://wiki.laptop.org/go/Health_Hardware">http://wiki.laptop.org/go/Health_Hardware</a> and add a blurb. This is a great place for people to post technical resources as well. Thanks, -- Ian Daniher OLPCinci Repair Center Lead OLPC Support Gang Volunteer <div class="gmail_quote">On Wed, Apr 8, 2009 at 5:27 AM, Sascha Silbe <<a href="mailto:sascha-ml-ui-sugar-iaep@silbe.org">sascha-ml-ui-sugar-iaep@silbe.org</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">On Wed, Apr 08, 2009 at 03:44:05AM -0400, Seth Woodworth wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I'd like to encourage everyone to build on the great work of Arjun Sarwal and help us extend the sensor interface with our peripheral -- the heart rate monitor. </blockquote></div> Looks great! As I intended to do a similar device in the future (it's going to measure SpO2 (oxygen saturation) as well as that's what I'm interested in), I'd like to see the schematics. Are they available somewhere? Do you just amplify the current through a photo transistor or is there something more fancy going on, e.g. AGC? CU Sascha -- <a href="http://sascha.silbe.org/" target="_blank">http://sascha.silbe.org/</a> <a href="http://www.infra-silbe.de/" target="_blank">http://www.infra-silbe.de/</a> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iQEcBAEBAgAGBQJJ3G3/AAoJELpz82VMF3DaxB0H/jq4PoQLdRltHR7LsRAgIqcg XmGgBTuDZS8qP8KFGEfhNJP04xc4NUfjQpDM3+LhgGBgWDKJMAm2kNWzKrxOxoJs 5DkPf7kxNGqRNHFjpXNJeLgcOvo/fcyrt1oynpuAu7qxISB2GFmlllmywL0dM0BX TGK/4f9fzilyMQnk53d9eAYw/4mblY+jTAEO1MTULYTbZywwNtdd8wmg+j04wXCq QTqghlU/8IadahAJBdXUfK95vQHiUYOmRO8MEDmDaqGZpb1Wb1QjlGCWBfSBn/D+ 5fYtc8+/VZDEnLp3vqBtqKku8CfnXNdpmH3Z4TSSVrI/YUu67O34kL3JFAeDm4o= =LYUf -----END PGP SIGNATURE----- _______________________________________________ Devel mailing list <a href="mailto:Devel@lists.laptop.org">Devel@lists.laptop.org</a> <a href="http://lists.laptop.org/listinfo/devel" target="_blank">http://lists.laptop.org/listinfo/devel</a> </blockquote></div>