Electronic stethoscope


HACK A DAY Fresh hacks every day HOME OUR VIDEOS SUBMIT A TIP FORUMS STAFF SEPTEMBER 8, 2013 Electronic stethoscope June 2, 2009 By Caleb Kraft 34 Comments [Vik] sent in this simple little project. He purchased a $3 spy ear, a simple 3 transistor amplifier, and attached a stethoscope end. Little modification was necessary, mainly just scraping a bit…