MAX30102 sensor integration with ESP8266 for wifi/bluetooth capabilities
- getting consistent heart beat and blood oxygen levels
- integrate wifi and bluetooth into source code
Optical Heart Rate Detection and Blood Oxygen Levels
By: Mark Wottreng
Date: 24 January 2022 \
Code References:
https://github.com/sparkfun/MAX30105_Breakout
https://github.com/aromring/MAX30102_by_RF
https://github.com/Protocentral/Pulse_MAX30102
Hardware References:
ESP8266 NodeMCU: https://amzn.to/3o2HhWl
MAX30102 sensor: https://amzn.to/3u3wEGQ
Data Sheets:
https://datasheets.maximintegrated.com/en/ds/MAX30102.pdf
https://components101.com/development-boards/nodemcu-esp8266-pinout-features-and-datasheet
bit manipulation code reference:
https://www.learncpp.com/cpp-tutorial/bit-manipulation-with-bitwise-operators-and-bit-masks/
This is a demo to show the reading of heart rate and blood oxygen level
This code is unverified and not calibrated,
USE FOR DEVELOPEMENT ONLY
It is best to attach the sensor to your finger using a rubber band or other tightening device. Constant pressure is required to get a good reading. When the pressure against your finger varies, the blood in your finger flows differently which causes the sensor readings to vary.
Hardware Connections (MAX30102 Breakoutboard to ESP8266 NodeMCU):
-VIN => 3.3V power
-GND => GND
-SDA => D1
-SCL => D2
-INT => D6
- NOTE: if reading are not consistent, some calibration may be required see maxim_max30102_init() in /lib/max30102/max30102.cpp
