HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger bee05 Perfect solution for easy &

Perfect solution for easy & quick pedicure

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HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger bee05 Perfect solution for easy &HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger Description: Finger heartbeat measurement module arduino test code: INT led Pin=13; INT sensor Pin=0; Double alpha=0. 75; INT period=20; Double change=0. 0; Void setup {Pin Mode (led Pin, OUTPUT)} void loop Static double old Change=0; INT raw Value=analog Read (sensor Pin); Double value=alphaold Value+(1 alpha)raw Value; Change=value old Value; Digital Write (led