Table 3.

(a) Shows the connections for the first two sensors. (b) Shows the connections for the last two sensors.

(a)
	Pulse Sensor				EMG Sensor
Sensor	Black (ground)	Red (power)	Purple (Signal)		−(ground)	+(power)	A (Signal)
Arduino	GND	5 V	A0 (Analog in)		GND	5 V	A0 (Analog in)
(b)
	Electret Microphone			IMU
Sensor	Black (ground)	Red (power)	Red (power)	VDD	GND	SCL	SDA
Arduino	GND	5 V	A0 (Analog in)	5 V	GND	A5 (Analog in)	A4 (Analog in)

GND, ground; VDD, power supply; SDA, serial data; SCL, serial clock.