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This week is soldering the sensor and connect it to Mbed board final detection sensor function. The Oximetry heart rate sensor (MAX30102) is soldered when the component arrives. It can be seen in figure 1.

Figure 1: the sensor is soldered.

Next, connect it to the arm board and follow the requirements in table 1.

The sensor MAX30102	ARM board MAX32600 mbed
SDA	P26 SDL
SCL	P27 SCL
INT	P20 SCK RX
VIN	3.3V
GND	GND

Table 1: Connection requirements

The connected graph is can be seen in figure 2.

Figure 2: The sensor connects to the MAX32600 mbed board.

Conclusion

In the soldering process, because the gap between the two pins is small, it is easy to cause a short circuit. Thus be careful when soldering. Then connect the sensor to the board according to the connection requirements. Turn on the Power on the board to see whether the LED light is on or not. The connection is correct if the LED on, otherwise, the connection will be tested.