Motion Detector

cpramhofer

i´m sorry - i thought we are all speaking about the camera based motion detection by @alexyak
https://github.com/alexyak/motiondetector

have a nice sunday!

cowboysdude

@cpramhofer No that’s ok… I think this thread is getting mixed between PIR sensor and camera… opps

bhepler

Greetings! I’m slowly working my way through this thread and trying to figure out what’s going on here.

What works: configurable timeout for the motiondetector seems to work just fine. Turns the screen off. Interestingly, if I’m viewing the mirror via my desktop browser, refreshing the page will turn the monitor on.

What doesn’t work: turning the screen on. Even after entering sudo modprobe bcm2835-vl2

Additionally, I’m seeing this in the console with the developer tools enabled:
getUserMedia() no longer works on insecure origins. To use this feature, you should consider switching your application to a secure origin, such as HTTPS. See https://goo.gl/rStTGz for more details.
:8080/modules/motiondetector//webcamcapture.js:78 NavigatorUserMediaError

paphko

I just tried this module but cpu load made me stop using it. Please tell me, how busy is your Raspberry with and without the motiondetector module? Mine is as follows on a Raspberry Pi 2:

With motiondetector enabled, there is always an electron process with ~100% cpu
With motiondetector disabled, I observed one or two electron processes with up to 15% cpu

I used a dedicated motion daemon on my old version of the mirror to switch on the screen on motion and I think I will set it up again. IIRC, it used ~40% cpu on a (single-core) Raspberry Pi 1 B+. What is your opinion?

bhepler

@paphko I just looked at my Pi 3 and I’m showing 40% usage with the motion detection module running (and failing). I suspect it’s the constant pic-compare-pic-compare loop that runs. It would be trivial to insert a wait in that loop to lower the CPU usage. Even a delay of 750 ms would probably help quite a bit.

alexyak

@bhepler you’re right. putting a delay should help with the CPU usage.

bhepler

Thanks, @alexyak. Any idea about how to get around the issue with the new security surrounding webcams?

DirkS

Hi, i had some issues with the PIR module where the screen doesn’t switch on anymore. Now with a original PI Camera i tried this module. Same issue, the screen doesn’t switch on but in this case no motion seems to be detected. (the PIR did detect)

with /opt/vc/bin/tvservice --preferred && sudo chvt 6 && sudo chvt 7 i can switch on the screen manually.
I followed every tip here in the thread. So i have no idea what is going on :(

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

That is the only thing i can see in the log.

bhepler

Check the console log. I suspect you’ll see a security error preventing the browser from accessing the monitor. Either launch your mirror in dev mode (modify your mm.sh script to read DISPLAY=:0 npm start dev and then restart via pm2 restart 0) or browse to your mirror’s address via a web browser and enter developere mode.

DirkS

i don’t have a mm.sh script. Where should it be located?

bhepler

@DirkS Aha. You probably haven’t set it up yet. No worries. You normally start your mirror by going into ~/MagicMirror and entering npm start, right? Just append the dev switch and you should see both the mirror UI and the browser console on your mirror: npm start dev

If you’re starting your mirror via SSH, prepend the command to send the output to the mirror’s display: DISPLAY=:0 npm start dev

DirkS

The mirror is starting at reboot. So maybe there is a script, i installed it a few month ago, i don’t remember :D

If i’m testing new settings i use pm2 restart mm for example. npm i’m just using to install new modules.

bhepler

@DirkS Interesting. Following the instructions I found via the GitHub MagicMirror repository, the pm2 should be using /home/pi/mm.sh to start the magic mirror process. Editing this file and appending DEV should give you the web browser console with log.

done

Hi and thanks to everybody making this module work!

@cpramhofer Did your solution solve the issue that the monitor did not switch on again after a longer period of time?

bhepler

@done Wait, does it work for you? Because it’s not working for me and this is the last thing I need before my mirror is done.

done

@bhepler Sorry, I haven’t tried yet. :)
I installed the cam and the module yesterday and motion detection worked.
But I experienced the same issue this morning. Wake up problem is not solved.

strawberry 3.141

@done propably everything is working for you guys and you can just see the screensaver, be sure to disable the screensaver

done

Hi @strawberry-3.141
Thanks for your answer
I disabled the screensaver by editing (found here
Is that what you had in mind?

sudo nano /home/pi/.config/lxsession/LXDE-pi/autostart

@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
#@xscreensaver -no-splash

@xset s off
@xset -dpms
@xset s noblank
@unclutter

Strange that my camera driver was not working today.
I had to activate the cam in the pi config again.

In the morning the cam led was on but when I tried to wake up the monitor the led just turned off.

I use a v1.3 cam on a rpi3.

strawberry 3.141

@done Personally I don’t have a mirror myself, but I heard from other users in this forum they had problems with the screensaver when they tried to wake up the mirror using my voice module. They could see the mirror got brighter, but the screen was still black because of the screensaver. I would connect a mouse or keyboard and do some action to see if there is a screensaver active.

done

@strawberry-3.141 Ok, I’ll give it a try. Tomorrow morning, I will test again. Thx!