arduino | $1 touch heart beat sensor

made this and wrote the signal processing routine. works surprisingly well. seems to perform better in warm rooms. you can view the finished project here:

http://jham.es/works/index.php?/protoforms/your-virtual-heartbeat/

and a link to the code:

http://bit.ly/jQjhxU

Category:

Education

Tags:

• arduino
• emitter/detector
• heart
• pulse
• rate
• IR
• omg

[CommissionMethod]

Cool stuff. Would be great to have a copy of the arduino and processing code for this if you can share

[astrojams1]

@CommissionMethod hello. i posted the arduino code in the description. hope it helps!

[birdstinyworld]

What I like in this video is that there is no amp and your transmitter/receiver generates pretty strong signal. Can you tell, what number analogRead() returns? I used crappy transmitter/receiver that gave about 50 at maximum. What element do you use?

[astrojams1]

@birdstinyworld as a raw signal, the analogRead() will produce what looks like absolute gibberish. to produce the nice graphs i show in the video, you have to do some signal processing. i wrote my own version of a low pass filter. i used the crappiest IR sensor i could find, so i wouldn't worry too much about quality. just strike a ligher near it. if it responds, it's good enough.

[AunShovah]

Kind sir...

would you be so kind as to enlighten me on the sensor you're using for this.

[astrojams1]

@AunShovah @AunShovah just a simple IR emitter/detector.

[outubesy]

where can i buy the touch pulsesensor,and i like it very much!

[shultzy055]

So... is this just like a software integrator?



[MrRodmod]

if you could share the processing code it would be awesome. nice job on this one