Hi FYI<br><br>There a new photos of the EKG circuit and an scope output<br clear="all"><br>This is the circuit<br><a href="http://wiki.laptop.org/go/Image:EKG2.jpg">http://wiki.laptop.org/go/Image:EKG2.jpg</a><br><a href="http://wiki.laptop.org/go/Image:EKG1.jpg">http://wiki.laptop.org/go/Image:EKG1.jpg</a><br>
<br>This is the desired EKG output<br><br><a href="http://wiki.laptop.org/go/Image:Dsc00004.jpg">http://wiki.laptop.org/go/Image:Dsc00004.jpg</a><br><a href="http://wiki.laptop.org/go/Image:Dsc00003.jpg">http://wiki.laptop.org/go/Image:Dsc00003.jpg</a><br>
<br>For the audio card of the XO, an additional step has to be done, an AM modulation of the signal<br> to avoid disruption. (special thanks to the prof Gustavo Rojas Medina his hard work has made all this effort possible).<br>
<br>We expect to have more documents on this (Circuit schematics, calculations, theory and PCB) in the next weeks.<br><br>Input and help appreciated<br><br>Cheers!<br>-- <br>Rafael Enrique Ortiz Guerrero <br>One Laptop Per Child<br>
<a href="mailto:rafael@laptop.org">rafael@laptop.org</a>