HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger sold2024 Its double-sided feature easily files

Its double-sided feature easily files nails to the desired shape

Lightweight and durable: These nail brushes are made of sturdy plastic which are not easy to bent

only with even more refining properties to further reduce pore size and increase skin luminosity

Important: Charge for 2 hours until green light is onBy design

Two Way Rotate Use for Both Left and Right Handed

HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger sold2024 Its double-sided feature easily filesHiLetgo 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