Read the statement by Michael Teeuw here.
Wake up/Hibernate display
I’m using a monitor in my project that does NOT have HDMI. I’m using an DVI to HDMI adapter to make it work.
Do I have any options for allowing the monitor to go to sleep and then wake up when needed? Note that a PIR sensor does not work because I don’t have HDMI.
@cheapdad , Hi, what’s the connection between HDMI and PIR? I built three mirrors, all three have adapters and use PIR.
@cheapdad u can still turn off the hdmi output… the monitor might show ‘no input’… which mine do…
so I went to blanking (hide all modules)…
@cheapdad no. PIR signals software. there are three different ways
@cheapdad sorry, typo.
phone didn’t like the word PIR
pir is a heat sensor
it signals, heat, and then no heat. that is all.
software has to make intelligent work from that
the PIR modules see heat, and turns ON the display
they see no heat, and some time later turns OFF the display
actually 4 ways to turn on/off the display/source, all commands u can issue
and the latest to turn off the display
many of the pir modules allow you to choose which approach u want to use.
some people are unable to use any of those (me)
so I wrote a module to hide the modules
@cheapdad and there two more ways, that need software
you can control a switch/relay that turn the power off /on to the display, for those monitors that don’t have internal controls that prevent this. (my monitors do not come back on after a power failure)
and you can modify the logic of the didplay with a relay/switch to turn on/off the backlight of the display. so the display is powered on, but not active
@cheapdad , in my mirrors the PIR sensor stop the display of the modules but the monitor continues to work, it display a black screen.