Product description: Gravity - MAX30102 heart rate sensor and pulse oximeter - DFRobot SEN0518
The heart rate sensor and pulse oximeter module is based on the MAX30102 chip. It is powered by 3.3 V / 5 V. The MAX30102 uses PPG (PhotoPlethysmoGraphy) data for measurement, which is converted into heart rate and oximetry values after processing by the MCU and then transmitted via the I2C or UART bus. The sensor is easy to use and the data is read by an Arduino microcontroller or Raspberry Pi minicomputer.
What is a Pulse Oximeter?
Apulse oximeter is an electronic device that is designed to perform a non-invasive measurement of blood saturation, or oxygen saturation. It measures the extent to which red blood cells absorb radiation of different wavelengths:
- red - 660 nanometers
- infrared - 940 nanometers
Gravity - MAX30102 heart rate sensor and pulse oximeter - DFRobot SEN0518.
User Information:
- Changing the pressure of your finger on the sensor may affect the accuracy of the output reading.
- The sensor should be fixed on your finger.
- This product is not a professional medical instrument and should not be used as an accessory to aid in diagnosis and treatment.
The module should be attached with a finger strap.
Features of MAX30102 heart rate sensor and pulse oximeter
- Microcontroller with integrated algorithm
- Data can be read directly by a minicomputer / microcontroller connected to a computer
Ways to Use the MAX30102 Sensor
- Home pulse oximeter
- Heart rate and blood oxygen measurement projects
- Projects for long-term monitoring of heart rate and blood oxygen measurement results
I2C / UART connection
The diagram opposite shows the connection of the module to the mini controller via the I2C bus.
Connector pinouts of the module
| Name | Description |
|---|---|
| D/T | I2C data line. |
| C/T | I2C clock line. |
| GND | Ground of the chip. |
| VCC | Power supply. |
MAX30102 heart rate monitor and pulse oximeter - connection to DFRduino Uno R3.
MAX30102 module dimensions.
MAX30102 heart rate sensor and pulse oximeter specifications
- Sensor compatible with Raspberry Pi 4, DFRduino UNO R3, Arduino Uno Rev 3
- Supply voltage: 3.3 V / 5 V
- Current: < 15 mA
- Communication: I2C / UART
- I2C address: 0x57
- Serial port baud rate: 9600
- Operating temperature range: from -40°C to 85°C
- Module dimensions: 25.5 x 32 mm
Kit contents
- 1 x Gravity - MAX30102 V1.0.0 heart rate sensor and pulse oximeter
- 1 x Gravity sensor connector - 4 pin I2C/UART
- 1 x strap
