Projector device to block light beam

#1

Ok so I’m getting crazy with this search.
I remember I saw somebody in the forum posting/talking about a device (remote controlled) to block the beam of light in a projector. Just a step motor and a remote receiver, but nicely done.
The usual purpose was to get rid of the ugly visible gray square when the projector sends a off signal (black).
I can’t figure out who, or where to find any info about it.
If anybody could help me out to get some sleep tonight :slight_smile:

Thanks!
j

#2

Not sure if you know him but Roman Torre who lives in Barcelona, sells this kind of device: http://www.rotor-studio.net/shop/

#3

Perfect! thank you so much!

#4

You are looking for a “dmx shutter”. There are a few options with a Google search. Fullcompass seems to sell one.

#5

Many projectors have them built in. Cheap solution is a cd drive from a computer and a long cable for the open close button.