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Today's Topics:
1. Re: Activate a screen when motion is detected (Adam Goryachev)
----------------------------------------------------------------------
Message: 1
Date: Sat, 29 Aug 2020 18:55:59 +1000
From: Adam Goryachev <mailingli...@websitemanagers.com.au>
To: Motion discussion list <motion-user@lists.sourceforge.net>,
Massively God <massively....@gmail.com>
Subject: Re: [Motion-user] Activate a screen when motion is detected
Message-ID:
<4309cd9d-b25d-00cc-bbeb-2339def43...@websitemanagers.com.au>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Why not use your option 2, when motion notifies you of motion you can do
the following steps:
1) open your browser or vlc or similar to stream from motions www interface
2) enable the backlight on the screen
When motion notifies you of the end of the event, kill the viewer and
backlight. Possibly enable some screensaver that can turn off the video
output which should automatically tell the LCD to turn off....
Regards
Adam
On 28 August 2020 5:29:03 am AEST, Massively God
<massively....@gmail.com> wrote:
Hello community.
Who I am? An idiot trying to do things too complicated when I am sure
there is an easier way. I do have linux/raspberry/bash/python
experience but I am no expert on any of them.
What do I have? Raspberry Pi Zero WH, Raspbian 10 Buster, Raspberry
Camera 2.1, Raspberry HDMI Touchscreen (USB connected, not GPIO), Of
course SD and all appropriated cables.
What do I want to do? I want to activate the screen when motion
detects movement on the camera. I am not interested in recording, or
webstream.
How do I want to do it? First, I wanted to activate the camera via
"python3 camera.startpreview()" But obviously I can't import in python
the camera instructions. So I created a very simple script;
import picamera
import time
camera=picamera.PiCamera()
camera.start_preview()
time.sleep (60)
And that is when I learned about the ENOSP error. Basically two
processes can not access the camera at the same time (motion and
python).
And this is where I am stucked. Unfortunately I can?t find anyone on
the internet who did and documented this.
SO now I have 2 options;
First, from motion.conf close the camera and then call the python
script that turns on the camera in the screen. CONS; The screen
backlight would be on all the time (though I am sure this has an easy
workaround)
Second, have motion send a constant stream from the camera to the
screen and activate/deactivate the backlight with "vcgencmd
display_power 1/0" on event start/stop.
Third, make a very complicated setup where motion starts streaming the
video in case of an event and a second process always listening and
showing that stream if available. CONS; It's way over my capabilities.
Thank you very much for your support
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