IoT Based Smart Pulse Oximeter With NodeMCU & MAX30100 Sensor

 

Circuit Diagram :-

Code :-

//Prateek //www.prateeks.in #include <Wire.h> #include <ESP8266WiFi.h> #include <BlynkSimpleEsp8266.h> #include "MAX30100_PulseOximeter.h" #include <SimpleTimer.h> #include <ESP8266WiFi.h> #include <BlynkSimpleEsp8266.h> char auth[] = "6497f4ca052e43e3817c1e7157926730"; // You should get Auth Token in the Blynk App. char ssid[] = "JustDo"; // Your WiFi credentials. char pass[] = "par12345"; #define REPORTING_PERIOD_MS 3000 SimpleTimer timer; PulseOximeter pox; uint32_t tsLastReport = 0; void onBeatDetected() { ; } void setup() { Serial.begin(115200); Blynk.begin(auth, ssid, pass); Serial.print("Initializing pulse oximeter.."); if (!pox.begin()) { Serial.println("FAILED"); for (;;); } else { Serial.println("SUCCESS"); digitalWrite(1, HIGH); } pox.setIRLedCurrent(MAX30100_LED_CURR_24MA); // Register a callback for the beat detection pox.setOnBeatDetectedCallback(onBeatDetected); timer.setInterval(3000L, getSendData); } void loop() { timer.run(); // Initiates SimpleTimer Blynk.run(); // Make sure to call update as fast as possible pox.update(); if (millis() - tsLastReport > REPORTING_PERIOD_MS) { // to android cell phone application Serial.print("BPM: "); Serial.print(pox.getHeartRate()); //blue.println("\n"); Serial.print(" SpO2: "); Serial.print(pox.getSpO2()); Serial.print("%"); Serial.println("\n"); Blynk.virtualWrite(V2, pox.getHeartRate() ); Blynk.virtualWrite(V3, pox.getSpO2()); tsLastReport = millis(); } } void getSendData() { }

Code With 16x2 Lcd :-
//Prateek //www.prateeks.in #include <Wire.h> #include <ESP8266WiFi.h> #include <BlynkSimpleEsp8266.h> #include "MAX30100_PulseOximeter.h" #include <SimpleTimer.h> #include <ESP8266WiFi.h> #include <BlynkSimpleEsp8266.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); char auth[] = "6497f4ca052e43e3817c1e7157926730"; // You should get Auth Token in the Blynk App. char ssid[] = "JustDo"; // Your WiFi credentials. char pass[] = "par12345"; #define REPORTING_PERIOD_MS 3000 SimpleTimer timer; PulseOximeter pox; uint32_t tsLastReport = 0; void onBeatDetected() { ; } void setup() { Serial.begin(9600); Wire.begin(D2, D1); lcd.begin(); lcd.backlight(); lcd.setCursor(3, 0); lcd.print("Welcome To"); lcd.setCursor(0, 1); lcd.print("JustDoElectronic"); delay(3000); lcd.clear(); lcd.setCursor(6, 0); lcd.print("IoT"); lcd.setCursor(1, 1); lcd.print("Pulse Oximeter"); delay(3000); lcd.clear(); Serial.begin(115200); Blynk.begin(auth, ssid, pass); Serial.print("Initializing pulse oximeter.."); // Initialize the PulseOximeter instance // Failures are generally due to an improper I2C wiring, missing power supply // or wrong target chip if (!pox.begin()) { Serial.println("FAILED"); for (;;); } else { Serial.println("SUCCESS"); digitalWrite(1, HIGH); } pox.setIRLedCurrent(MAX30100_LED_CURR_24MA); // Register a callback for the beat detection pox.setOnBeatDetectedCallback(onBeatDetected); timer.setInterval(1000L, getSendData); } void loop() { timer.run(); // Initiates SimpleTimer Blynk.run(); // Make sure to call update as fast as possible pox.update(); if (millis() - tsLastReport > REPORTING_PERIOD_MS) { // to computer serial monitor Serial.print("BPM: "); Serial.print(pox.getHeartRate()); //blue.println("\n"); Serial.print(" SpO2: "); Serial.print(pox.getSpO2()); Serial.print("%"); Serial.println("\n"); lcd.clear(); lcd.setCursor(0, 0); lcd.print("BPM: "); lcd.setCursor(10, 0); lcd.print(pox.getHeartRate()); lcd.setCursor(0, 1); lcd.print("SpO2:"); lcd.setCursor(10, 1); lcd.print(pox.getSpO2()); lcd.setCursor(14, 1); lcd.print("%"); Blynk.virtualWrite(V2, pox.getHeartRate() ); Blynk.virtualWrite(V3, pox.getSpO2()); tsLastReport = millis(); } } void getSendData() { ; }


Video :-