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I want to use this small LCD screen with the Pi for a static application to display some information:

http://www.amazon.co.uk/gp/product/B0056WJP1M/

I read in the reviews that it will switch on automatically when input is applied. Assuming it switches off when the signal is removed, this could be a way of controlling it remotely.

My question is. Is it possible to switch the RCA composite video out signal on and off via software, or is it always on?

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  • Google tvservice. tvservice -o turns video output off, tvservice -p turns it on with preferred settings. tvservice -s gives current status (on/off/configuration), tvservice -c "x y" enables composite with specified mode, tvservice -h gives a decent help. Brief Help for tvservice – lornix Jul 15 '14 at 11:01
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/opt/vc/bin/tvservice -o will Power off the display

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  • This answer got flagged as Low Quality. Personally, I think it's fine, but you might possibly want to include some explanation of the command or at least some links to more explanation, just to clarify. – RPiAwesomeness May 16 '14 at 22:16

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