3
SEN-KY039HS
Heartbeat sensor
Page 1: ...3 SEN KY039HS Heartbeat sensor...
Page 2: ...right by Joy IT 2 3 SEN KY039HS TABLE OF CONTENT 1 Introduction 2 Use with the Raspberry Pi 2 1 Connection 2 2 Installation 2 3 Program example 3 Use with Arduino 3 1 Connection 3 2 Program example 4...
Page 3: ...T 3 3 SEN KY039HS 1 Introduction Dear customer Thank you for choosing our product In the following we will show you what to consider during commissioning and use If you experience any unexpected probl...
Page 4: ...tion Since the heartbeat sensor is an analog sensor and the Raspberry Pi has no analog inputs you will need to use an analog to digital converter For example our ADC COM KY053ADC Raspberry Pi KY039HS...
Page 5: ...e sudo raspi config sudo pip3 install adafruit circuitpython ads1x15 import time import board import busio import adafruit_ads1x15 ads1115 as ADS from adafruit_ads1x15 analog_in import AnalogIn Create...
Page 6: ...l thresh and Signal P thresh condition helps avoid noise P Signal P is the peak keep track of highest point in pulse wave signal surges up in value every time there is a pulse if N 250 avoid high freq...
Page 7: ...en the values are going down the beat is over Pulse False amp P T thresh amp 2 T P thresh T thresh if N 2500 if 2 5 seconds go by without a beat thresh 512 set thresh default P 512 set P default T 512...
Page 8: ...B da der Finger neu aufgesetzt oder weggenommen wurde So wird der MaxValue resetiert um eine neue Basis zu erhalten if rawValue 4L maxValue maxValue rawValue 0 8 Detect new peak if rawValue maxValue 1...
Page 9: ...sec 60 100msec per sample Das Hauptprogramm hat zwei Aufgaben Wird ein Herzschlag erkannt so blinkt die LED kurz aufgesetzt Der Puls wird errechnet und auf der serriellen Ausgabe ausgegeben void loop...
Page 10: ...function as the new appliance purchased from us free of charge for disposal when you purchase a new appliance Small appliances with no external dimensions greater than 25 cm can be disposed of in nor...
Page 11: ...you after your purchase If any questions remain open or problems arise we are also available by e mail telephone and ticket support system E Mail service joy it net Ticket System http support joy it n...
