Contents
Electrical generater from Hard disk is illustration of the origin of electricity in a simple manner is done by the movement of magnetic field, which is produced from the permanent magnet through the wire coil of the hard disk reading hand.  Read more about electrical generater from hard disk....
Percussion bot instruments This is based on the property of the electro-magnet that distributes the electric current to the wire coil and created the magnetic field around it. This magnetic field will oppose the magnetic field of the permanent magnet and will make the reading arm move in a bending like manner. Read more percussion instrument ....
Wind bot instrument Such as Lao reed mouthorgan, organ or harmonium. These can be played by basically the same principle with that of the percussion, but instead of using the force to hit, it is used to open and close the airways of the instruments. Or to be précised, the reading hands are used instead of fingers. Read more wind bot instrument ....
String bot instrument Also based on the same principle with the other musical instruments. The only difference is that the force is used to make the reading hand pluck the strings of the various instruments. This can be used with guitar, lute, which includes the other string instruments as well. Read more about generator....
Seismic detector- recorder The making of the vibration detector and recorder has used the reading arm of the hard disk, included with the wire coil and the permanent magnets, which was fixed near the wire coil. Read more about generator....
Electric bell Begin with the opening of the hard disk lid, the part which is the disk and the reading hand would be seen. The reading hand is fixed in between two permanent magnets, above and below. When the reading hand and the permanent magnets are taken out, extend both the wire coils by connecting them with wires to give a moderate length. Read more about generator....