Although I'm eagerly learning about electronics, I still hit some walls.
I want to make a sound visualiser using 9 electromagnets placed in a grid.
On top of these magnets will be a sheet of paper with iron filings which in turn will create visually pleasing patterns.
The sound will be analysed by processing.
The magnets will only have to turn on and off.http://img155.imageshack.us/img155/2325/img1748k.jpgMy Problem
the relays i took apart to function like an electromagnet are of this partnumber : SRU-06VDC-SL-C
this is the setup so far:
- it works with the voltage/ampere i get out of the digital Arduino I/O pins, but it is not strong enough.
- I presume i need to be working with an external power supply. which is suited for my needs? (battery? dc adapter?)
- how much voltage/ampere can i use to maximize the effects of electromagnetism?
final question is:
- what do i use to switch the electromagnets which are powered by a higher power source? (eg. transistor....?)
i'm looking for a way to connect the arduino I/O signal to power one or more of the 9 magnets in the grid.
and which components i need to do this.
I thank this forum in advace,
you'll be seeing more of me around.
I started teaching new technologies and these are problems i run across while creating these kinds of projects with them.