HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger bee05 can be applied in bowling

can be applied in bowling alley

We use 3pcs steel safety buckles to ensure the safety

well made workmanship --Our Product Line-- Our product include ballet leotard

Do not install on the surface of water above 50 degrees

Sufix Superior Leader 110-Yards Leader Wheel Fishing Line (Clear

HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger bee05 can be applied in bowlingHiLetgo 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