#ekg

I've been learning how to read and interpret ECG's today, and have gotten curious on performing a measurement on myself (beyond single lead, ideally with I,II,III, V1-V6 etc. ) What is the cheapest semi-ok option out there to do so? Is there some hacker-ish device out there I can build to make an ECG? Doesn't have to be medically certified, I'm not a medial professional, I just like to learn and mess around #ecg #ekg #medical