Zulu Posted February 8, 2013 Share Posted February 8, 2013 Hi, all. Can't find anyone else with this problem, but it seems inevitable to me...I have a need to switch off my projector during the stage show, but the annoying "countdown" is projected onto the set while the bulb is cooling. Does anyone know how to disable the projection, while it powers down. I have an Optoma GT750 projector. Many thanks, Zulu Link to comment Share on other sites More sharing options...
david.elsbury Posted February 8, 2013 Share Posted February 8, 2013 From a quick Google. it looks like a 'home' projector rather than a professional model. You might be stuck with it? Unless you can replace the projector? Why can't you leave the PJ powered up and just send black to it? Otherwise you might be able to make or buy a shutter, do a Google search for 'projector shutter' and add site:blue-room.org.uk to the end to search the forum. David Link to comment Share on other sites More sharing options...
AHYoung Posted February 8, 2013 Share Posted February 8, 2013 optomas have a setting called "hide information" or similar in the Options menu - this stops the display of input type and stuff popping up onscreen during use, it may work for the power off timer, not sure. If it doesnt, you wont be able to suppress it, whay you will need is a projector shutter, anywhere between a bit of cardboard and string to a Whalberg DMX unit will work and its been covered before. However if you have the shutter, you probably no longer need to turn the power off as im assuming that you want to kill the bleed from the unit when its got no signal. Link to comment Share on other sites More sharing options...
kerry davies Posted February 8, 2013 Share Posted February 8, 2013 As Dr Johnson said, it ain't what you know if you know where to find the knowledge.Optoma owners forumMillions of people posting here (slight exaggeration) with all sorts of Optoma info which I can't be bothered to read. If they have not yet covered it you could post on there. Link to comment Share on other sites More sharing options...
Zulu Posted February 9, 2013 Author Share Posted February 9, 2013 Thanks for the suggestions, guys.I found the "hide info" option, but this doesn't affect the power off count down. There is also an "auto poet off, which switches off after the signal is stopped. However, it still gives the counter.I'm going to look for the projector shutter, otherwise, it'll have to be left On during the show. Only a minor inconvenience. Many thanks for the help.Cheers, Zulu Link to comment Share on other sites More sharing options...
alistermorton Posted February 9, 2013 Share Posted February 9, 2013 Thanks for the suggestions, guys.I found the "hide info" option, but this doesn't affect the power off count down. There is also an "auto poet off, which switches off after the signal is stopped. However, it still gives the counter.I'm going to look for the projector shutter, otherwise, it'll have to be left On during the show. Only a minor inconvenience. Many thanks for the help.Cheers, Zulu You can make your own shutter with a r/c servo, a piece of black card and a DMX to servo adapter, such as milford instruments supply. Then you can move the shutter under control of your lighting desk. Link to comment Share on other sites More sharing options...
jonathanhill Posted February 9, 2013 Share Posted February 9, 2013 There is also an "auto poet off, Really? Must be handy for those poetry recitals that go on and on... Link to comment Share on other sites More sharing options...
d_korman Posted February 10, 2013 Share Posted February 10, 2013 Thanks for the suggestions, guys.I found the "hide info" option, but this doesn't affect the power off count down. There is also an "auto poet off, which switches off after the signal is stopped. However, it still gives the counter.I'm going to look for the projector shutter, otherwise, it'll have to be left On during the show. Only a minor inconvenience. Many thanks for the help.Cheers, Zulu You can make your own shutter with a r/c servo, a piece of black card and a DMX to servo adapter, such as milford instruments supply. Then you can move the shutter under control of your lighting desk. Or to do it at virtually no cost, you can use the tray mechanism from an old CDROM drive - fill the hole with black card, and use an SPDT switch to open and close. Link to comment Share on other sites More sharing options...
Zulu Posted February 13, 2013 Author Share Posted February 13, 2013 Thanks, again, Guys. Having googled some projector shutters, it seems the two types suggested by Aliste and DMorton are de rigueur. I'll give one of them a go (for next time !) cheers, Zulu. Link to comment Share on other sites More sharing options...
David Lee Posted February 22, 2013 Share Posted February 22, 2013 Out of interest, if the lamp is cooling it is off, right? If so, how does it project onto the screen? Been bugging me. Link to comment Share on other sites More sharing options...
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