connecting R Pi to a usb port on a monitor or projector?

We're looking to initially use the Pi as part of our campus emergency notification strategy by having the unit always on and displaying a static message. We've been able to run the Pi by connecting it to the usb port of several monitors and projectors. Will regularly powering on and off the monitor/projector will be creating a potential problem for the Pi?

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GreenYamo over 13 years ago

Hello Doug, i'm not much of an expert, but multiple unclean shutdowns sound like a way to end up with a corrupt OS.
How often will the device be powered up and down I think is the key here?
Steve
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Former Member over 13 years ago in reply to GreenYamo

Given that these would be connected to classroom projectors they would be shut down anywhere from 6 to 20 times a day. We're need to see if we can monitor the projector/monitor serial port and shutdown the system properly.
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Former Member over 13 years ago in reply to GreenYamo

Given that these would be connected to classroom projectors they would be shut down anywhere from 6 to 20 times a day. We're need to see if we can monitor the projector/monitor serial port and shutdown the system properly.
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GreenYamo over 13 years ago in reply to Former Member

Doug, hopefully one of the ones more versed in Electrical Engineering and Linux will be along soon to tell me I'm talking rubbish, but doing a cold shutdown like that up to 20 times a day sounds like a sure fire way to end up with a corrupt file system fairly quickly. As for damage, I don't think it may do it harm in the short term, but could possibly shorten the life expectancy. Heating an cooling repeatedly will tend to shorten the life of anything like that, a constant temperature is more gentle.
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