How to generate electric energy from keyboard stroke???

[hanshen]

If i want to use piezoelectric, it is possible or there is another better idea to do this. My idea is to make it self-powered so that it could recharge the battery.

 

[KerimF]

Miniature coils and the keys hold small magnets... just an idea
Edited:
One may get a patent for it :-D

Or

By pressing any key the whole board of the keys also moves and generates the pulse in one wide coil.

 

[hanshen]

Miniature coils and the keys hold small magnets... just an idea
Edited:
One may get a patent for it :-D

Or

By pressing any key the whole board of the keys also moves and generates the pulse in one wide coil.

I looked into the keyboard. It cant be added magnet at the key, wont the keyboard hardware will be affected by the magnet?
I still feel using piezoelectric is nice but i just cant make sure it will work.

 

[KerimF]

Your idea is good but the generated power would be rather too low so it will likely need a special booster IC. One needs to consider also the added cost.

For instance, the magnetic induction idea could be implemented in mass production only, much like the case in producing integrated circuits.

By the way, lately, FvM (in this group) has proposed LTC3588 as an IC for "Energy Harvesting"... you may be interested to search about the subject.

 

[hanshen]

That's is a good IC for this project. it can operate in low power as my project is using piezo for low power appliances. Now my only problem is to get the suitable piezoelectric as it is the main item for the whole project.

---------- Post added at 01:11 ---------- Previous post was at 00:10 ----------

That's is a good IC for this project. it can operate in low power as my project is using piezo for low power appliances. Now my only problem is to get the suitable piezoelectric as it is the main item for the whole project.

where can i get the suitable piezoelectric source? i thinking of using long strip type.

 

[jiripolivka]

I think a musician should be quite sensitive to keyboard keys. Generating a usable power through the keyboard is not a good idea. But you can use the pedal which is usually pushed by a foot with a good force. This is where I would try to start. Find a strong magnet (neodymium) and a flat coil, and give it a try.... Maybe you can mechanically drive a flywheel first, then connect it to a small DC motor as a generator, to get a smooth output.

 

[hanshen]

I think a musician should be quite sensitive to keyboard keys. Generating a usable power through the keyboard is not a good idea. But you can use the pedal which is usually pushed by a foot with a good force. This is where I would try to start. Find a strong magnet (neodymium) and a flat coil, and give it a try.... Maybe you can mechanically drive a flywheel first, then connect it to a small DC motor as a generator, to get a smooth output.

Thanks for the info. but the keyboard i gonna modify is the keyboard for typing.

 

[SANDEEP ANAND]

I think a musician should be quite sensitive to keyboard keys. Generating a usable power through the keyboard is not a good idea. But you can use the pedal which is usually pushed by a foot with a good force. This is where I would try to start. Find a strong magnet (neodymium) and a flat coil, and give it a try.... Maybe you can mechanically drive a flywheel first, then connect it to a small DC motor as a generator, to get a smooth output.

Do not worry to get a NEODYMIUM magnet you can get it from harddisk,and CD,DVD,CD,DVD-ROM/COMBO (IN THE LENCE)