MAX30105 Particle and Pulse Ox Sensor Hookup Guide
Example 3 - Temperature Sensor
Open the Example3 Temperature Sense sketch, and load it onto your RedBoard or Uno.
This example outputs readings from the on-board temperature sensor in both Celsius and Fahrenheit. The temp sensor is accurate to +/-1 C but has an astonishing precision of 0.0625 C.
The temperature is used internally by the sensor to calibrate its samples but can be useful if you need a sensitive and fast responding temp sensor.