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KY-039 Heartbeat Detector

30 ج.م.

Liveغير متوفر

## Description The KY-039 Heartbeat Detector uses a very high resistance resistor R1, because most of the light through the finger is absorbed, it is desirable that the phototr... المزيد عند تك ديبوت مصر

تحقق منه على تك ديبوت مصر

## Description The KY-039 Heartbeat Detector uses a very high resistance resistor R1, because most of the light through the finger is absorbed, it is desirable that the phototr... المزيد عند تك ديبوت مصر

سعر ومواصفات KY-039 Heartbeat Detector

  • أفضل سعر لـ KY-039 Heartbeat Detector من تك ديبوت مصر فى مصر هو 30 ج.م.
  • طرق الدفع المتاحة هى
    دفع عند الاستلام
  • تكلفة التوصيل هى 35+ ج.م., والتوصيل فى خلال 2-4 أيام
  • أول ظهور لهذا المنتج كان فى أغسطس 04, 2016

المواصفات الفنية

Weight:5 g

وصف تك ديبوت مصر

Description

The KY-039 Heartbeat Detector uses a very high resistance resistor R1, because most of the light through the finger is absorbed, it is desirable that the phototransistor is sensitive enough. The most important is to keep the shield stray light into the phototransistor. For home lighting that is particularly important because the lights at home mostly based 50HZ or 60HZ fluctuate, so faint heartbeat will add considerable noise.

Required Hardware Devices

  • Arduino controller × 1
  • USB data cable × 1
  • KY-039 Heartbeat Detector

Connecting

  • Sensor pin S connect to Arduino pin Analoog 0 / A0
  • Sensor pin + (middle pin) connect to Arduino pin 5+
  • Sensor pin – connect to Arduino pin GND

Code

// Pulse Monitor Test Scriptint sensorPin =0;double alpha =0.75;int period =100;double change =0.0;double minval =0.0;void setup (){ Serial.begin(9600);}void loop (){staticdouble oldValue =0;staticdouble oldChange =0;   int rawValue = analogRead (sensorPin);double value = alpha * oldValue +(1- alpha)* rawValue;   Serial.print(rawValue); Serial.print(","); Serial.println(value); oldValue = value;   delay (period);}

مميزات وعيوب KY-039 Heartbeat Detector

  • لا يوجد تقييمات لهذا المُنتج.