Pulse projects, the - selectionofnoiseworks


The sensor itself consists of an infrared emitter and detector mounted side-by-side and pressed closely against the skin. When the heart pumps, blood pressure rises sharply, and so does the amount of infrared light from the emitter that gets reflected back to the detector. The detector passes more current when it receives more light, which in turn causes a voltage drop to enter the amplifier circuitry. This design uses two consecutive operational amplifiers (“op-amps”) to establish a steady baseline for the signal, emphasize the peaks, and filter out noise. Both op-amps are contained in a single integrated circuit (IC or “chip”), and hooking them up is really just a matter of interconnecting the pins correctly.

I swapped out the original first-prototype for the second prototype on which all production engines are based. This is now one seriously-fast RC model.

World Famous Electronics llc. started as a Kickstarter project in 2011.  We've been making the PulseSensor ever since. 


Pulse Projects, The - SelectionofnoiseworksPulse Projects, The - SelectionofnoiseworksPulse Projects, The - SelectionofnoiseworksPulse Projects, The - Selectionofnoiseworks

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