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Author Topic: A couple questions about upgrading to digital projectors for on-screen advertising Justin Hamaker Film God Posts: 2253 From: Lakeport, CA USA Registered: Jan 2004 posted 01-12-2010 12:12 AM                        Just to be clear, I am talking about stand-alone LCD/DLP projectors to replace regular 35mm projectors - not Digital Cinema projectors. When we have looked at this in the past, one of the main issues we were not able to resolve was how to power on the projectors at the end of the show and how to power them off at the start of the show. Currently we just plug into the convenience outlet and the power on/off automatically. But with digital projectors we would need to send an IR pulse to power on and we would need to be able kill the lamp but keep the fan running at shut down. Most likely we would create a presentation in PowerPoint and then burn it to DVD for playback. Any input on how to make this work would be greatly appreciated. We currently do everything ourselves and would prefer to avoid using an outside agency.  |  IP: Logged Michael Voiland Expert Film Handler Posts: 219 From: Naperville, IL US Registered: Aug 2009 posted 01-12-2010 01:51 AM                     This is an interesting issue to deal with. I would suggest getting a projector with a serial / rs232 port. Then make sure it supports distinct power on off commands over rs232. Get a micro controller such as an adruiano and program it to go with a contact closure. When the pins change from high to low or low to high send the appropriate command. This is the best way as the projector will cool down properly.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-12-2010 04:14 AM                     Just get a projector like the Panasonic PT-D3500U. I've got tons of them in operation for just this purpose. Download the manual and you will see how pathetically easy it is to tie into it via their "remote 2" terminal. You can use the same relay you have on your switched AC outlet to connect to pins 1 and 2. Voila, done. (Look at page 41)  |  IP: Logged

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