RSS for MAKE
Here’s a well-documented and rather enlightening project from Embedded Lab:
This project demonstrates a technique to measure the heart rate by sensing the change in blood volume in a finger artery while the heart is pumping the blood. It consists of an infrared LED that transmits an IR signal through the fingertip of the subject, a part of which is reflected by the blood cells. The reflected signal is detected by a photo diode sensor. The changing blood volume with heartbeat results in a train of pulses at the output of the photo diode.
looks like a paki finger to me!
looks like a paki finger to me!
Very good article and nice idea
I want to post this article on my web site http://www.almekhlafi.com with write this site source if you no have any problem
Thankyou
Very good article and nice idea
I want to post this article on my web site http://www.almekhlafi.com with write this site source if you no have any problem
Thankyou
Looks like something that would come out of electronics workshop class. hah
Schematics & plans please!!!!!
can u please mail schematics n datasheet..
Hi Matt,
Can you mail me the complete report.I am making a monitor but a wireless one.Moreover, I am keen to use a pulse sensor rather than making one as my focus is on transmission of data rather than creating it.Thanks in advance.
Hi Matt,
Can you mail me the complete report.I am making the same monitor but a wireless one..Thanks in advance.
Jackson.
Follow MAKE
Maker Shed: Deal of the Day
On Sale: $79.99
DIY Hologram Kit
Make your own holograms! Just set up the included jig, use the laser to illuminate your object, and expose the self developing film. You'll have your very own high quality hologram in less than an hour!
Read More →