HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger sold2024 Lightweight and durable: These nail

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

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

Two Way Rotate Use for Both Left and Right Handed

Easy to use: Just cut a hole in the booties

Grab the edges of tape

HiLetgo 5pcs 5V Heartbeat Detect Sensor Heart Rate Detect Measuring Module Measure Finger sold2024 Lightweight and durable: These nailHiLetgo 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