লেখক:

Abdur Raafi Talukder (Nahan) 
Standard 5
Anandaniketan School, Sylhet 


Materials:

  • a)       Battery (min-3v, max-5v)
  • b)      DC motor (1.5v less than the battery)
  • c)       Two A4 paper
  • d)      Tape
  • e)      Wires
  • f)       Switch  (push or P2)
  • g)      Scissors
  • h)      Cable 


 


Idea of the project: The idea of the project is to make a machine which messages a person’s body. To do this the machine needs to vibrate, because when something vibrates it continuously twitches. The machine is mainly used to cure cramps and strains in the muscle.


Construction: 

1st step: Making two balls

First take an A4 paper and cut it into two. Then make a ball with one of the halves and wrap it up with the other half. Do the same process with another paper again. Then wrap the two balls with tape and then they will look like this

 

 

2nd step: Making it vibrate

First I named the two balls A and B. Then I made a hole just beside its centre of the A ball. Then push the stick of the DC motor through the hole of the A ball. Then attach the B ball by the side of the motor to apply to the surface of your body where it’s paining.


 

3rd step: Wiring

First join the battery’s negative port with one of the ports in the DC motor.

 

 

 

Then attach the batteries positive port with any wire in the switch and the other wire (of the switch) with the motor’s other port.


 

 

4th step: Joining the parts

Join all the parts to the battery with tape and the machine will look like this.

 

 

 

How it works: The A ball should have a hole one millimeter away from its center so one side has more mass than the other side. So when it spins, it applies more force to the side with greater mass. That is why the motor vibrates. The B ball is attached to the motor. So while the motor vibrate the B ball also vibrates. The concept of giving the B ball is to not to let the current of the battery inside your body. When you want to massage a part of your body where it is paining, switch on the machine and press the B ball to the part of your body where it is paining and it will start messaging.