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#Piezosensor upgrade
MR BRIAN R COCKBURN on It’s Never Too Late To Upgrade Your ZX81 Keyboard.Elliot Williams on Retrotechtacular: Circuit Potting, And PCBs The Hard Way.Upgrade pi-top on The Simplest Social Engineering Hack Of Them All.Erik Johnson on Apple II – Now With ChatGPT.Passionate Hams Make Their Mark On The Hack Chat 49 Comments Posted in Medical Hacks, Parts Tagged heart rate, heart rate sensor, piezo, piezoelectric Post navigation If you’re looking for an entry to The Hackaday Prize, this would be a great jumping off point for anything in either the fitness or medical domains. It’s a much simpler solution to measuring a heart rate, and since two people haven’t heard of this technique, it’s likely a lot more people haven’t heard of this technique either. From there, it’s just averaging measurements and extracting a heartbeat from the data. The piezo in question is a standard, off the shelf module, and adding this to a microcontroller is as easy as putting the piezo on an analog pin. Out of curiosity, he taped the sensor to his finger, and to everyone’s surprise, the values his microcontroller were spitting out were an extremely noise-free version of his heart rate. was working on a project that detects if water is flowing through a pipe with a few piezoelectric sensors. Look around for heart rate sensors that interface easily to microcontrollers, and you’ll come up with a few projects that use LEDs and other microcontrollers to do the dirty work of filtering out pulses in a wash of light.
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