This project is a portable and cost-effective health monitoring system designed to measure and display three vital signs:
- Heart rate using a Pulse Sensor
- Body temperature using DS18B20
- Blood oxygen (SpO₂) using MAX30100
It was developed as a group mini-project as part of a course.
To build a basic yet effective health monitoring system using Arduino that displays real-time data on an LCD and over Serial Monitor.
| Component | Purpose |
|---|---|
| Arduino UNO | Microcontroller |
| Pulse Sensor | Measures heart rate (BPM) |
| DS18B20 Digital Temperature Sensor | Measures body temperature (°C, °F) |
| MAX30100 Pulse Oximeter | Measures SpO₂ |
| 16x2 LCD Display + I2C module | Displays live data |
| Breadboard, jumper wires, resistors | Circuit connection |
- Live monitoring of:
- ✅ Heart Rate (BPM)
- ✅ Body Temperature (Celsius and Fahrenheit)
- ✅ Blood Oxygen Level (SpO₂)
- LCD display with real-time updates
- Serial monitor logging
- Beat detection from both MAX30102 and Pulse Sensor
- Signal threshold filtering for improved accuracy
Below is the actual wired circuit used in the project:
Pulse: 105 BPM
T: 96.0F O2: 97%- Connect sensors as shown in the circuit photo
- Open the Arduino IDE
- Upload the
health_monitor.inofile to the Arduino UNO - Open the Serial Monitor (baud rate: 9600)
- Watch the LCD and Serial Monitor display live health metrics
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