{HowTo} turn on/off your monitor (Time based, PIR/Button, App)

hoofta

@cruunnerr As many have said your patience and helpfulness is much appreciated. I did have the ground and the power swapped. I turned off the Pi swapped them and turned it back on and re-ran the test. Got the same thing. I grabbed another PIR and ensured I plugged it in properly. Hooray! (I guess I fried the other one by swapping PWR and GND) Your python test works and it activates MM for the proper amount of seconds after the time delay. Woohoo! Now I need to get it to go to a black screen instead of turning off since after the PIR Sensor stops sensing motion I then see the “NO SIGNAL” screensaver bounce around my TV. One step closer!

cruunnerr

:)

thank you very much ^^

I am very glad u found out what went wrong. :)
So now u should be able to use the “screen_on/off” files instead of the monitor_onoff

Just try out :)

hoofta

@cruunnerr I just redid step 2.2 with the alteration of screen_on/off.sh (instead of monitor) and the HDMI is still being disabled and giving me the “no signal” screensaver.

How do I know that the chmod +x steps are actually making the script executable?

cruunnerr

try the shell scripts without the python script.

sh monitor_off.sh should show a black screen (not turning HDMI off)
sh monitor_on.sh should disable the black screen.

if this is working for u, then your pir.py script seems not being correct.

the chmod +x step is necessary for the python script execute the shell scripts.

But first try the commands above. If this doesn’t work, then i have to think about and search for a solution.
But i tried it just a few seconds ago, and it works fine here

hoofta

@cruunnerr for me $ sh monitor_off.sh returns the following
sh: 0: Can’t open monitor_off.sh
I then inputted $ nano monitor_off.sh and it’s empty when I just inputted the commands from your instructions. ¯_(ツ)_/¯

cruunnerr

again one step closer :D

put in the content and save with “ctrl+x” and “y”

try everything agin and report if u got trouble again :)

edit:

oh sorry. Aren’t we using “screen_on/off”?? :D

so try

sh screen_off.sh should show a black screen (not turning HDMI off)
sh screen_on.sh should disable the black screen.

hoofta

I GOT IT! I stepped back a few steps with the module removed from the config.js file and it wouldn’t blank anymore so it made me think I had something wrong with the pir.py file.

I looked into Paviro’s files in the PIR-Sensor folder and found in the node_helper.js file a reference to tvservice -o/p. I found where my xscreensaver was located /usr/bin/ and I had the node_helper file execute the xscreensaver instead of the tvservice.

Bingo! No more “No Signal” bouncing around when the PIR-Sensor module kicks in! Many thanks to Cruunnerr for the help. Definitely could not have figured this out without you!

Mykle1

@hoofta

Good work, mate! I like it. :-)

PaulB

@cruunnerr,

Thank you so much! What a great ‘How-to’- Guide :)

You and your post helped a lot. :)

hnperkins

hey all, im having a issue with my pir module. i have run the pir.py script and its constantly scrolling the … until i move and then it stops for a brief second, and when i load the module in my config file the screen just stays black. is this some kind of interference or do i just have it hooked up backwards or something?