7.0.Motor Sizing and Battery Sizing - L-division-2020-2021-odd/Repo-04 GitHub Wiki
MOTOR SIZING:
Force calculation
F= WG
F=force (downward)
W= Weight of puppets + musical instruments(800gm)
G= gravity
F= 0.8*9.8
F= 7.84N
Torque calculation
T= F*r
T=torque
r= radius of the gear(2.76cm)
T= 7.84*2.76
T= 21.63 Kg-cm
Here the required torque is 21.63Kg-cm. We need dc motor (10rpm) at 12V.
Battery sizing :
| Sr.No | Components | Capacity | Voltage | Current |
|---|---|---|---|---|
| 1 | Arduino UNO | 1 | 5V | 100mA |
| 2 | DC motor | 2 | 12V | 300mA |
| 3 | Buzzer | 1 | 12V | 30mA |
| 4 | LED | 1 | 5V | 30mA |
TOTAL RATING :
| voltage rating | current rating |
|---|---|
| 12V | 330mA |
| 5V | 130mA |
Applying The Factor of Safety:
Factor of safety is =1.2
| voltage rating | current rating |
|---|---|
| 12V | 432mA |
| 5V | 156mA |
We use two adaptors for our course project
one is of 12V and the other is of 5V