novel uses for a small doppler?
Stephanie Alarcon
I've gotten my paws on a small, handheld 3MHz doppler that runs on 2 AA
batteries. The intended use is to detect a fetal heart rate and it
works on adult hearts. The feline heart rate test was inconclusive,
though Gimpala did appreciate getting an extra belly rub with the end of
the tester. I think I just held it in the wrong spot. I looked for the
source of kitty purrs and couldn't find that either.
But what about other uses, including non-biological? I want to see if
it can sense studs or electrical wiring in walls, and try it on vessels
half-filled with water. Could it sense gaps or voids in thick
materials? Cracks in metal? Could it tell you if something is stuck in
a plumbing trap under the sink? Believe it or not, there's nothing on
Instructables about hacking a fetal doppler!
