VERY COOL Speaker Trick

[sharkeeper]

Search for "galvo" on google...

-DAK-

 

[DanTMWTMP]

Originally posted by: shuttleteam
Search for "galvo" on google...

-DAK-

why? galvonometer?

 

[911paramedic]

I just hold the laser pointer in my teeth with my headphones on really loud, works great.

 

[focusyn]

i didn't know that... pretty cool

 

[DurocShark]

Nice... something to share with my science geek 12yo son..

 

[HomeBrewerDude]

how about multiple cans over different speaker channels, each reflecting lasers to same locations....your own personal floyd laser show ensues.

 

[sharkeeper]

Yes an instrument used to direct a laser beam into mappable Cartesian coordinates is known as a laser galvanometer or "galvo" for short.

The most popular home brew x-y system is actually made from hard disk actuators!

With some basic driving circuits, it's quite easy to modulate the beam into simple Lissajous patterns. Using TTL blanking on the laser (this obviously won't work on a pointer without a driver circuit re-design!) you can make much more complex shapes. There's lots of software available as well. A laser video projection system was even made with a white laser (multi mode) system and complex mirror box. It produced TV pictures that were capable of thousands of lines of resolution! Very expensive though.


-DAK-

 

[Tiggerbaby]

Glueing things to speakers might not be a viable option for everyone... I have Klipsch 5.1's and would rather not get glue and tape on the speaker casing or diaphragm.


Ahhh, that's why I posted this... I was hoping people would post suggestions and different methods. I also have never heard of the galvanometer.