8.Motor sizing and Adapter sizing - H-division-2022-2023-even/Repo12 GitHub Wiki

specification	volume(cm^3)	density(kg/cm^3)	mass(kg)	force(kg\cm^2)	torque(kg-cm)	rpm of motor	quantity
SERVO motor for eyebrows->Towerpro-SG50	2.25	1.20	0.84	8.23	6.58~7		2
SERVO motor for mouth mechanism->Towerpro-SG90	1.12	1.20	0.84	0.744*9.8=7.29	2.916~~3		1
DC motor for popping mechanism	[for 2faces]~2x(20x20x0.5)=400	0.0012	total=1.2(mass of outer box)+0.84(mass of eyebrow)+0.744(mass of mouth)+2*(0.03){mass of two servos}=>2.844	2.844x9.8=27.8712	27.8712x10x1.5(FOS)=418.068	150	1

Adaptor sizing

Si.no	Components name	quantity	current required	voltage required
1.	Adaptor	1	880mA	5V
2.	Adaptor	1	1500mA	12v
3.	Arduino mega 2650	1	100mA	5v-12v

Total=Total current for 12V adaptor + Total current for 5V adaptor + current of Arduino mega 2650 =1500mA *1+880mA 1+100mA1 =2480mA=2.4A

Factor of safety=1.2

Current required =2.4mA*1.2=3A

Therefore 12V and 5V adaptor is used