Read the statement by Michael Teeuw here.
Motion Detector
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 So I’ve installed motion detector as Sean explained 
 I’ve modified the config.JS file, restarted the mirror but no change!Is there something more to do to activate this function ? - @Mykle1 and @j-e-f-f => I’ve done as you said: back up done! Thank your for your kind advice and … yes! I sleep better and I expect no tears now ;-)
 
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 @Natacha3 I had issues with Motion Detector, so ended up installing motion alongside Magic Mirror and using that - https://github.com/Motion-Project/motion 
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 @Natacha3 it took me a while to get my motion detector to work too. I suggest making a simple script independent of MagicMirror to test that your PIR sensor is working and tuned correctly. Mine has two adjustment screws on it that I needed to play with before it behaved properly. More information here: 
 https://www.raspberrypi.org/learning/physical-computing-with-python/pir/
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 @j.e.f.f Thank you again Jeff but … I use a Pi camera, not a PIR sensor ! ;-) I’ve checked that the camera was operating normally (sorry again, I’m not able to recover the link but … at least i’ve seen the picture ! 
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 @mongo116 Thank you for your advice but I’m a complete ignorant and I must admit that I’ve been affraid by reading https://github.com/Motion-Project/motion/blob/master/motion_guide.html As a total noob, I guess it’s a bit out of reach for me. (maybe after 3 or 4 decades I will play the easy side with that ! ) ;-) 
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 @Natacha3 
 I also tested the motiondetector of alexyak, without success and therefore installed Motion, which works without problems. However, I understand, that the process to compile it for your self is not easy for a beginner.
 Are you aware of https://forum.magicmirror.builders/topic/988/motion-detection-with-raspicam-non-module-version
 The linked thread provides a precompiled version of Motion and some recommended settings.
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 @Hawking Thank you so much for your input ! 
 It works as a charm !
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 Hello all, 
 I updated my raspberry to stretch and now my MM disable the Monitor and the Monitor start immediate without motion. I got this massage: Does someone know why this happen? 
 Thanks a lot!
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 No one an Idea? 
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 Hi all, I just come back on this topic because I followed the install process as described by hawking: @hawking said in Motion Detector: @Natacha3 
 Are you aware of https://forum.magicmirror.builders/topic/988/motion-detection-with-raspicam-non-module-version
 The linked thread provides a precompiled version of Motion and some recommended settings.So I just open a command window and do the following command ./motion -c motion.conf 
 then I open another window and I start the MagicMirror with npm startEverything works fine for a couple of hours then the Mirror stays dark I do a CTRL Q 
 and in the motion window I get the following :[1] [NTC] [ALL] motion_loop: fps: 3.998576 idle 63.46% over 0.00% 
 [1] [NTC] [EVT] event_newfile: File of type 2 saved to: /run/shm/lastsnap.jpg
 [1] [NTC] [ALL] motion_loop: fps: 3.998768 idle 61.99% over 0.00%
 [1] [NTC] [ALL] motion_loop: fps: 3.999344 idle 62.23% over 0.00%
 [1] [NTC] [EVT] event_newfile: File of type 2 saved to: /run/shm/lastsnap.jpg
 [1] [NTC] [ALL] motion_loop: fps: 3.998928 idle 62.18% over 0.00%
 [1] [NTC] [ALL] motion_loop: fps: 3.998960 idle 62.16% over 0.00%
 [1] [NTC] [EVT] event_newfile: File of type 2 saved to: /run/shm/lastsnap.jpg
 [1] [NTC] [ALL] motion_loop: fps: 3.999136 idle 62.54% over 0.00%
 [1] [NTC] [ALL] motion_loop: fps: 3.995844 idle 61.22% over 0.00%
 [1] [NTC] [EVT] event_newfile: File of type 2 saved to: /run/shm/lastsnap.jpg
 [1] [NTC] [ALL] motion_loop: fps: 3.997186 idle 61.51% over 0.00%
 [1] [NTC] [ALL] motion_loop: fps: 4.001200 idle 62.69% over 0.00%
 [1] [NTC] [EVT] event_newfile: File of type 2 saved to: /run/shm/lastsnap.jpg
 [1] [NTC] [ALL] motion_loop: fps: 3.999360 idle 60.96% over 0.00%
 [1] [NTC] [ALL] motion_loop: fps: 3.998641 idle 59.35% over 0.00%
 [1] [NTC] [EVT] event_newfile: File of type 2 saved to: /run/shm/lastsnap.jpg
 [1] [NTC] [ALL] motion_loop: fps: 3.999232 idle 59.59% over 0.00%
 [1] [NTC] [ALL] motion_loop: fps: 3.999088 idle 58.86% over 0.00%
 [0] [ERR] [ALL] main: Thread 1 - Watchdog timeout, trying to do a graceful restart
 [0] [ERR] [ALL] main: Thread 1 - Watchdog timeout, did NOT restart graceful,killing it!
 [0] [INF] [ALL] motion_cleanup: Calling vid_close() from motion_cleanup
 [0] [INF] [VID] vid_close: calling video source cleanup
 [0] [ALR] [VID] MMAL Camera cleanupSo I can see that some detection occured properly and pictures have been saved in /run/shm/lastsnap.jpg 
 (I checked, this function is deactivated but … anyway ! Only 1 pic is stored so it’s not a matter of folder flooded)The Watchdog timeout would be a possible lead but google does not help me so much as so many different issues are linked… :cry: I hope that you will forgive me if I asked a stupid question and what you will be rather indulgent not to turn me down ! 

