Using this DFRobot MAX30102 sensor is easy. First, you can wear it on your finger or wrist. Just make sure to fix it firmly on your finger when using it, as this will help avoid inaccurate data caused by pressure changes. When it comes to power, it can work with a power supply ranging from 3.3V to 5V. And remember, this is not a professional medical device, so don't use it for medical diagnosis or treatment.
For maintenance, keep it in a place where the temperature is between - 40℃ and 85℃. If you're not using it, since it has an extremely low standby current, you don't have to worry too much about power consumption. When you want to get data from it, it uses I2C communication with an address of 0x57, which is compatible with most controllers.