![]() L Heart rate data and blood oxygen data were collected Note: this module by default only with 3.3 V level MCU communications, because it defaults to using IIC pin pull up theresistance of 4.7 K to 1.8 V, so there is no communication with the Arduino by default, if you want to commune with the Arduino and need two 4.7 K of the IIC pin pull-up resistor connected to the VIN pin, these contents will be introduced in the back of the chapter.īefore starting this project, I thought about some simple features:
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