Motion Detector

cowboysdude

Hi guys,
I have a problem. My MM do not turn on the display in the morning. I is possible that my pi camera is in a kind of sleepmode or standby? I have to restart with pm2 stop mm and start again an than it works fine.

I have encountered that MANY times… don’t exactly know why myself… It’s not just this module it happens with most of them… I believe once it sleeps long enough the PI doesn’t want to wake up LOL

cpramhofer

Hi Guys,

had exactly the same problem with mit Raspi NOIR Cam V2.1.
the sudo modprobe bcm2835-v4l2 command solved my problem.

maybe you should add this Tipp in your Readme as many people out there have the same problem.

greets
Christoph

trividar

Hi Christoph
Unfortunately it didn’t work for me;o( Today my screen did not turn on. My Pi works and I can connect over ssh but I have to stop and start my MM and thank works again fine. I just think that my camera stop working if there is no motion a long time (during night).

I got some errors during the night:
0_1473579292739_Bildschirmfoto 2016-09-11 um 09.31.31.png

alihallo

First of all, I also had the problem which could be solved by adding

@reboot sudo modprobe bcm2835-v4l2

at the last line of the crontab. Thank you very much!

It works fine for some hours, but suddenly the monitor does not show up again.
I cannot see error messages, but the following commands does not get an answer anymore…

/opt/vc/bin/tvservice -s

There is no return value anymore, it is just loading forever.
In the log it looks like this:

mm-0 monitor :state 0x12000a [HDMI CEA (16) RGB lim 16:9], 1920x1080 @ 60.00Hz, progressive
mm-0 monitor has been activated
mm-0 monitor :state 0x120002 [TV is off]
mm-0 monitor has been deactivated
mm-0 monitor :state 0x12000a [HDMI CEA (16) RGB lim 16:9], 1920x1080 @ 60.00Hz, progressive
mm-0 monitor has been activated
mm-0 monitor :state 0x120002 [TV is off]
mm-0 monitor has been deactivated
mm-0 monitor :state 0x12000a [HDMI CEA (16) RGB lim 16:9], 1920x1080 @ 60.00Hz, progressive
mm-0 monitor :
mm-0 monitor :
mm-0 monitor has been deactivated
mm-0 monitor :

As soon as the problem occures, the command

/opt/vc/bin/tvservice --preferred && sudo chvt 6 && sudo chvt 7

also does not switch the monitor on again.
It seems that the tvservice command just got a problem after some hours… Any idea how to solve this?
I need to restart the pi to get the monitor on again, after that everything works fine for some hours…

Best regards,
alihallo

cpramhofer

Hi alihallo,

i have exact the same problem. i also added the @reboot sudo modprobe bcm2835-v4l2 command into my cronetab.

but once the screen is off for some hours it will not switch on again.

for me it seems that the RPi 3 is going into some kind of sleepmode if the monitor is switched off for too long.

kind regards
Christoph

cowboysdude

This post is deleted!

paphko

Just as a side note, I have the same issue that my RasPi screen does not switch on again after a random time. But I am running v1 of the mirror (so not this motion detector module) and I use motion for motion detection. My guess is that this is an issue with the RasPi firmware because it was working fine several months ago (and I was frequently updating RasPi firmware)…

cowboysdude

I just run a straight cron job with a file called pir.py that runs two other files…

monitor_on.sh
monitor_off.sh

It’s not incorporated into the mirror it runs the entire pi and I’ve had great luck with it! :)

cpramhofer

hi @cowboysdude ,

could you please give me (and maybe others) the detailed instruction how these files look in detail and where those are located?

thanks a lot in advance,
Christoph

cpramhofer

here is what i have done, actually it works - i will watch it a few days.

switch to /bin/

cd /
cd bin

open nano and create a shell script

sudo nano monitor_on.sh

write the “On” Command in it and save with Ctrl+x

/opt/vc/bin/tvservice --preferred && sudo chvt 6 && sudo chat 7

open nano and create another shell script

sudo nano monitor_off.sh

write the “Off” Command in it and save with Ctrl+x

/opt/vc/bin/tvservice -o

make both shell scripts executable

sudo chmod +x monitor_off.sh
sudo chmod +x monitor_on.sh

open the crontab and add the following at the end

switches the monitor off and on every 15 minutes. this is for experimenting, i will look how it works and will set the

time up as.

15 * * * * sudo /bin/monitor_off.sh
15 * * * * sudo /bin/monitor_on.sh
@reboot sudo modprobe bcm2835-vl2