Table 4.

The electrical and electronic components of the system.

Component	Specification
Myoware Electromyography sensor	Operating Voltage: 2.9 V–5.7 V
	Operating Current: 9 Ma–14 mA
	Output mode: EMG envelope and raw signal
S-LFS-4-4 ways Infrared (IR) Sensor	S-LFS-4-4 ways Infra-red sensor
	Operating voltage: 3.3 V–5 V
	Operating current: >1 A
Arduino Microcontroller	Microcontroller: ATmega328
	Operating Voltage: 5 V
	Operating Current: 1 A
	Input Voltage (Recommended): 7 V–12 V
	Input Voltage: 5 V–20 V
	Digital I/O pins: 14 (6 PWM, Output)
	Analog I/O pins: 6
	DC Current per I/O pin: 40 mA
	DC Current for 3.3 V: 50 mA
	Clock Speed: 16 MHz
	Flash Memory: 32 KB
	SRAM: 2 KB
	EEPROM: 1 KB
Mini Servo Motor	Operating Voltage: 4 V–7.2 V
	Operating Current: 220 ± 50 mA
	Speed Operation: 0.1 s/60° at 4.8 V
	Torque: 1.8 Kg*cm at 4.8 V
	ROM: 180°
Power Converter	Input DC: 3.0 V–35 V
	Output voltage: 1.5 V–35 V (Input must greater 1.5 V than output)
	Output current: 2 A max
	Conversion efficiency: 92%
	Minimum drop voltage: 1.5 V
Power grid and adapter	ACDC converter
	Operating Voltage: 240 V 50 Hz
	Output Voltage: 12VDC
	Output Current: 2 A