MAX30100 Pulse Oximeter Heart Rate Sensor Module

This sensor are not directly compatible with Arduino or ESP. Modifications are required to use it with an MCU.

Solution 1 (tested):

1. Cut the PCB trace (highlighted in red) that connects the 4.7kΩ pull-up resistors to the 1.8V line. This will stop them from pulling the signal lines to the wrong voltage.
2. Make a jumper connection (shown in yellow) with a piece of wire or a solder blob. This will reconnect the pull-up resistors to the 3.3V line instead. This way, the signal lines are pulled up to a voltage the Arduino can understand.

Here’s the board with and without the modifications:

After making these changes, connect the module to the Arduino UNO like this:

The wiring is pretty simple. Connect the VIN pin of the MAX30100 module to the 3.3V pin, and connect GND to GND on the Arduino. Then, connect the SCL pin to the I2C clock pin and the SDA pin to the I2C data pin on your Arduino. Finally, connect the INT pin to digital pin 2.

Solution 2 (tested):

If you prefer not to cut any traces or solder jumpers, try this instead:

Carefully remove all three 4.7kΩ pull-up resistors (R1, R2, R3) from the module.

Here’s the board with and without the resistors removed:

Once that’s done, connect the module to the Arduino UNO using the same wiring as Solution 1. Just add your own external 4.7kΩ pull-up resistors on the SCL, SDA, and INT lines. Connect one end of each resistor to the respective signal line and the other end to 3.3V.

Here’s what the wiring looks like:

Our Evaluation:

We tested both solutions, and they both work great! Choose the one that you feel more comfortable doing.

Once you’ve made either fix, your MAX30100 module should work just fine with your Arduino!

If you are wandering to make a machine which is used to detect heart rate and pulse rate. then this sensor Module is Compatible with you.

Heart Rate click carries Maxim’s MAX30100 integrated pulse oximetry and a heart-rate sensor. It’s an optical sensor that derives its readings from emitting two wavelengths of light from two LEDs – a red and an infrared one – then measuring the absorbance of pulsing blood through a photodetector. This particular LED color combination is optimized for reading the data through the tip of one’s finger.

The signal is processed by a low-noise analog signal processing unit and communicated to the target MCU through the mikroBUS I2C interface. Developers of end-user applications should note that the readings can be negatively impacted by excess motion and changes in temperature. Also, too much pressure can constrict capillary blood flow and therefore diminish the reliability of the data. A programmable INT pin is also available. The operates at the 3.3V power supply. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Applications:

1. Medical Monitoring Devices
2. Fitness Assistant Devices
3. Wearable Devices

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Pin Configuration:

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Circuit Diagram:

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Features:

1. Optical sensor: IR and red LED combined with a photodetector
2. Measures absorbance of pulsing blood
3. I2C interface plus INT pin
4. 3.3V power supply complete pulse oximeter and heart rate sensor solution, simplifies design, integrated LEDs, photo sensor, and
5. high-performance analog front
6. Ultra low power operation increases battery life for wearable devices
7. Advanced functionality improves measurement performance, high SNR provides robust motion artifact resilience integrated
8. ambient, light cancellation high sample rate capability fast data output capability
9. It is an integrated pulse oximetry and heart rate monitor sensor solution.

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Please allow 5% measuring deviation due to manual measurement.

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Package Includes:

1 x MAX30100 Pulse Oximeter Heart Rate Sensor Module