Ky-039 Finger Measuring Heartbeat Sensor Module For Arduino

US $210

  • shenzhen, China
  • Jun 9th
Related Hot Sales! Chip-Partner Store! 10pcs HC-SR501 Adjust IR Pyroelectric Infrared PIR Motion Sensor Detector Module 5PCS DHT22/AM2302 Digital Temperature and Humidity Sensor Replace SHT11 SHT15 10pcs TEC1-12706 Thermoelectric Cooler Cooling Peltier 12V 60W 6A 92Wmax 2pcs Infrared Wireless Remote Control Kits for Arduino AVR PIC NEW 5PCS DHT11 DHT-11 Digital Temperature and Humidity Sensor NEW 5PCS DS18B20 Waterproof Digital Thermal Probe or Sensor DS18B20 NEW $14.25+ free shipping $23.42+ free shipping $28.95+ free shipping $ 6.36 + free shipping $6.46 + free shipping $10.78+ free shipping             Product Name: KY-039 Finger Measuring Heartbeat Sensor Module for Arduino More Items In Our Store,Click Here!   This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse. Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other side of the finger, phototransistor used to obtain the flux emitted, when the blood pressure pulse by the finger when the resistance of the phototransistor will be slight changed. We chose a very high resistance resistor R1, because most of the light through the finger is absorbed,it is desirable phototransistor sensitive enough.Resistance can be selected by experiment to get the best results. 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. ARDUINO test code: // Pulse Monitor Test Script int ledPin = 13; int sensorPin = 0; double alpha = 0.75; int period = 20; double change = 0.0; void setup () {   pinMode (ledPin, OUTPUT);   Serial.begin (115200); } void loop () {     static double oldValue = 0;     static double 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); } Maybe you also need: KY-029 3mm Red and Green LED Common Cathode Module for Arduino AVR PIC Photoelectric Speed Sensor Encoder Coded Disc for Freescale Smart car ST-Link V2 stlink Emulator Downloader STM8 STM9 9-Axis Degree of Freedom ITG3200/ITG3205 ADXL345 HMC5883L Module IMU Sensor ATMEGA16 Development Board AVR Development Board Minimum System Core Board 1 Funduino Mega 2560 ATmega2560-16AU Board (Arduino-compatible) + Free USB Cable $2.45+ free shipping $6.58+ free shipping $10.2+ free shipping $18.65+ free shipping $12.66 + free shipping $16.9+ free shipping             HOT Category On sale Wholesale Combination ICs & Processors Sensors Arduino  Cables & Connectors LCD module Power modules   Breadboards   Motors & Drivers  DIY PCB Board  Servo Motors USB/RS232 to TTL DIY Kits Wireless modules Wireless Bluetooth PIC Programmer AVR Programmer Color LEDs Resistors & Potentiometers   For more quantity, please contact us       1) We accept PayPal payment ONLY.     inkfrog terapeak inkFrog Analytics
Condition:
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...
Brand 100% brand new
Country/Region of Manufacture China
Model KY-039
UPC Does Not Apply
MPN Not applicable

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