HOW TO MAKE A HEART RATE SENSOR?-BIOMEDICAL PROJECTS

I HAVE  ARRANGED A SCHEMATIC ABOUT MAKING A HEART RATE SENSOR

DOWNLOAD THE CIRCUIT DIAGRAM FOR THE HEART RATE SENSOR

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SOMETHING MORE

Here is the inside of the light reflectance sensor (top) and a schematic drawing of it's circuitry (bottom). First, carefully remove the phototransistor as shown. Then, attach the three wires that we will connect to the heart sensor (show in bright yellow).

Hint: if you leave the leads from the phototransistor when you cut it off, you can attach the two corresponding wires directly to them, rather than to the circuit board itself.

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