Motion Detector

[cowboysdude]

So this is what I’ve done and it solved it…

I took your sudo modprobe bcm2835-v4l2 and entered before I started the mirror and no more error so I started the mirror in dev and it was registering movement…Great!

So I closed the mirror and restarted… same error, driver not loaded…

so I did this in case of a power out,e tc…in a terminal window:

sudo crontab -e

Enter this on the last line:

@reboot sudo modprobe bcm2835-v4l2

Saved and exited.
Reboot
Restart mirror in dev mode
NO error and tracks movement
close mirror and restart in dev
NO error and tracks movement.

PROBLEM SOLVED!! Thank you guys for being patient!! It’s working.

[trividar]

Thank you guys! you are amazing!

[sero]

Same here, works like a charm!
Thanks guys :)

[alexyak]

Huge thank you to @strawberry-3-141 for helping to troubleshoot this issue and suggesting the solution! While I know all kinds of dev languages and tools, I am pretty new RPI and Linux.

[trividar]

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.

[cowboysdude]

@trividar said in Motion Detector:

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:

[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

[cowboysdude]

Well hey Thanks for making that easy… was JUST working on that LOL I’m putting it on github with instructions and the files…

[cowboysdude]

https://github.com/cowboysdude/Pir-Sensor

[cowboysdude]

Update:

https://github.com/cowboysdude/Pir-Sensor

Monitor was only partially coming back on this should fix that.

[chengstark]

my monitor won’t turn back on
when I run “npm start dev”, it shows “compare result=Infinity,Infinity;0,0” , seems like it can’t capture any movement
the camera module works outside MagicMirror
when I tried “sudo modprobe bcm2835-v4l2”, it says “modprobe: invalid option – ‘4’”
how can I fix this

[cpramhofer]

Hi @cowboysdude

thank you for your files and the explanation. what i don´t understand is how this all works together with the “Motion Detector” - i would prefere to use a camera instead of a PIR Sensor but as far as i see i have to install the pir.py file which is calling the on&off files and referring to the PIN with the connected PIR sensor.

is there a way to use the on&off files with the “Motion Detector” Module?

greets
Christoph