[sdiy] Laser Harp in action

[Yves Usson]

Hi

For those of you interested in building a Laser Harp, Andrew Kilpatrick
designed in 2000 a full project, including the MIDI controller.
His optical system uses two cheap red laser pointers and photosensors.
Nowadays, it is easy to find green laser pointers for a decent price.
Although the power delivered by green pointers is the same as for the
red ones (1-3mW) they look much brighter (it has to do with the higher 
sensitivity
of the retinic cells in the green domain) and since the visual is more 
important
than the sounding for such an instrument it worths the slight
increase in price. No risk of skin burning...
Here is the URL where to find all about it :
http://www.andrewkilpatrick.org/mind/laserharp/

Cheers
-------------------------------------------------------------
Yves Usson

http://www-timc.imag.fr/Yves.Usson/personnel/SDIY

email : yves.usson at imag.fr