D-I-Y Taser?

“This article should teach you how to build a simple heart monitoring device, ECG/EKG (electrocardiograph). In the United States and Worldwide million’s of people are losing their life because of heart failure. It is a disease that comes with diabetes, stress and etc. Before I continue to explain what I did, I would like to WARN you! 500mA (miliAmps) on 220V will completely destroy your nervous system (so run it from battery supply), check everything twice and you are responsible for it on you own. OK! I think I can continue. There was a student job which I wanted in the Biomedical field, so to make my CV look even better I wanted to have something from this field so I built an ECG. First what I did was I went to google.com and looked for similar projects and I found a great number of similar projects. Some were for logging data of heart disease patients, some were for some futuristic health monitoring devices and some were just for fun, as mine.”

source: e-DSP