kagayl on SEN-11776 - Muscle Sensor v3 Kit

I stopped making ECG this year. Too much work and not much gain/profit. This is the product. http://www.machealth.com.au/mms/tabid/660/ProductID/788/Default.aspx

Alternatively take a look at: http://www.stm32circle.com/projects/project.php?id=31