Table 2.

The required Materials and Specifications.

Device	Operating Voltage	Inbuilt ADC	Supply Current	Output Voltage Range	Cost 2 (CAD)
Pulse Sensor (SEN-11574)	3–5.5 V	N/A 1	3–4 mA	0.3–5 V	24.95
EMG Sensor (SEN-0240	3.3–5.5 V	N/A	20 mA	0–3 V	50.03
Electret microphone (CEM-C9745JAD462P2.54R)	1–10 V	N/A	0.5 mA	≤10 V	0.95
MPU9250	2.4–3.6 V	16 bit	450 μA–3.2 mA	2.4–3.6 V	14.95
Arduino Uno	6–20 V	10 bit	20–50 mA	N/A	35.95
HC-05 Bluetooth Module	3.3–5 V	8 bit transfer	≈35 mA	N/A	11.99
Raspberry PI Zero W	5 V	11–17 bit	1.2 A	N/A	28.95
Batteries	N/A	N/A	400–600 mAH	9 V	1.47

References [6,7,18,33,34,35,36], ¹ N/A: Not available, ² Cost as of 30 September 2018.