One sensor has a baud rate of 115200, the other 9600. I think this will create problems in the serial because I can only choose one baud rate.
What do you think? The first sensor is the pulse sensor, while the other is the gsr sensor by grove. Link: http://pulsesensor.com/ Link 2: http://www.seeedstudio.com/wiki/Grove_-_GSR_Sensor