RESOURCE SPECIFICATION AND SELECTION - H-Division-2021-2022-Even/Repo-13 GitHub Wiki

MOTOR SIZING OF JHONSON DC GEAR MOTOR

Mass[m]=1.5kg

radius[r]=7cm

Force = m = 1.5 kgcm erwer Torque = F*r=1.5kgcm * 7 = 10.5 kgcm

Total torque = torque * factor of safety = 10.5*1.5 = 15.75 kgcm

Motor selected = 60 RPM high torque side shaft Jhonson DC gear motor

MOTOR SIZING OF SERVO MOTOR

Mass=0.03kg

Radius=3.6cm

F=m*g=0.03 * 980.6=29.418kgcm

Torque=F*r=29.418 * 3.6=105.904kgcm

Total torque=T * F.O.S=105.904 * 1.5=1.588572kgcm

Torque on motor T=1.58kgcm

As per calculation we use Servo motor Tower pro SG-90

POWER ADAPTOR CALCULATION

I=Stall currentnumber of motors F.O.S I=2600 * 1.2 = 3120 mA = 3.12A as per our calculation we are going to use power adapter of 12v-3.12A |

Name	Specification	current specific	Quantity	weight(gm)
Power adapter	12v	2A	1	100gm
microcontroller	mega 2560 Arduino mega	50mA	1	36gm
DC motor	Johnson DC motor with high torque	900mA	1	150gm
Bluetooth module	this module is used to receive data and send it to Arduino through Tx pin of Bluetooth module	12mA	1	50gm
servo motor	Tower pro SG90	650mA	2	72gm
Stepper motor	NEMMA 17 stepper motor with extremely High efficiency and full load speed	400mA	1	400gm