Re: Linux for time lapse and wifi?

[Richard Kolb]

Thanks everyone, I'll see what works for me.

Richard Kolb

From: noz...@gmail.com <noz...@gmail.com> on behalf of Marc Nozell 
(m...@nozell.com) <m...@nozell.com>
Sent: Saturday, July 1, 2017 12:57:06 PM
To: Richard Kolb II
Cc: Ted Roche; GNHLUG
Subject: Re: Linux for time lapse and wifi?

Here is another blog post with timelapse videos using the arduino hack of US 
FIRST Robotics 2013 competition:
http://blog.nozell.com/2013/03/7-hours-of-engineering-pit-from-new.html

-marc

On Sat, Jul 1, 2017 at 12:53 PM, Marc Nozell 
(m...@nozell.com<mailto:m...@nozell.com>) 
<m...@nozell.com<mailto:m...@nozell.com>> wrote:

A lot depends on what kind of camera you are using.

My arduino hack that Ted pointed to worked great driving a Sony Alpha DSLR and 
would likely work with similar DSLRs with some tweaking.  It would require 
cutting up a shutter release cord ($10?)  Last I looked gphoto2 didn't support 
pulling images from my camera model, so you may need a way to manually get the 
images.

As many have said, driving a USB webcam is pretty simple and probably your best 
bet.   If you want to spend ~$50(?) get a Raspberry Pi, the camera attachment 
w/ extra long ribbon. That works great for me. The RPi3 has wifi, so just 
provide power and some scripting to take the image and push it somewhere for 
processing.  The RPi3 is probably powerful enough to collect images and create 
periodic timelapse videos.

Depending on your bandwidth, you could have the RPi just livestream directly to 
youtube.  It isn't a timelapse, but does let you keep an eye on something and 
can go back and review anything missed.  I did that for a couple snow storms 
last April.  Very simple scripting to set it all up.

-marc


On Wed, Jun 28, 2017 at 8:51 PM, Richard Kolb II 
<richard.k...@gmail.com<mailto:richard.k...@gmail.com>> wrote:
> Marc Nozell wired up a camera with a mechanical release, using Arduino
> and then converted the resulting .JPGs into videos:

I forgot he did that, I should look into it.

​
Richard Kolb II


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Re: Linux for time lapse and wifi?

[Marc Nozell (m...@nozell.com)]

Here is another blog post with timelapse videos using the arduino hack of
US FIRST Robotics 2013 competition:
http://blog.nozell.com/2013/03/7-hours-of-engineering-pit-from-new.html

-marc

On Sat, Jul 1, 2017 at 12:53 PM, Marc Nozell (m...@nozell.com) <
m...@nozell.com> wrote:

>
> A lot depends on what kind of camera you are using.
>
> My arduino hack that Ted pointed to worked great driving a Sony Alpha DSLR
> and would likely work with similar DSLRs with some tweaking.  It would
> require cutting up a shutter release cord ($10?)  Last I looked gphoto2
> didn't support pulling images from my camera model, so you may need a way
> to manually get the images.
>
> As many have said, driving a USB webcam is pretty simple and probably your
> best bet.   If you want to spend ~$50(?) get a Raspberry Pi, the camera
> attachment w/ extra long ribbon. That works great for me. The RPi3 has
> wifi, so just provide power and some scripting to take the image and push
> it somewhere for processing.  The RPi3 is probably powerful enough to
> collect images and create periodic timelapse videos.
>
> Depending on your bandwidth, you could have the RPi just livestream
> directly to youtube.  It isn't a timelapse, but does let you keep an eye on
> something and can go back and review anything missed.  I did that for a
> couple snow storms last April.  Very simple scripting to set it all up.
>
> -marc
>
>
> On Wed, Jun 28, 2017 at 8:51 PM, Richard Kolb II 
> wrote:
>
>> > Marc Nozell wired up a camera with a mechanical release, using Arduino
>> > and then converted the resulting .JPGs into videos:
>>
>> I forgot he did that, I should look into it.
>>
>> ​
>> Richard Kolb II
>>
>>
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>>
>>
>
>
> --
> Marc Nozell (m...@nozell.com) http://www.nozell.com/blog
>



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Re: Linux for time lapse and wifi?

[Marc Nozell (m...@nozell.com)]

A lot depends on what kind of camera you are using.

My arduino hack that Ted pointed to worked great driving a Sony Alpha DSLR
and would likely work with similar DSLRs with some tweaking.  It would
require cutting up a shutter release cord ($10?)  Last I looked gphoto2
didn't support pulling images from my camera model, so you may need a way
to manually get the images.

As many have said, driving a USB webcam is pretty simple and probably your
best bet.   If you want to spend ~$50(?) get a Raspberry Pi, the camera
attachment w/ extra long ribbon. That works great for me. The RPi3 has
wifi, so just provide power and some scripting to take the image and push
it somewhere for processing.  The RPi3 is probably powerful enough to
collect images and create periodic timelapse videos.

Depending on your bandwidth, you could have the RPi just livestream
directly to youtube.  It isn't a timelapse, but does let you keep an eye on
something and can go back and review anything missed.  I did that for a
couple snow storms last April.  Very simple scripting to set it all up.

-marc


On Wed, Jun 28, 2017 at 8:51 PM, Richard Kolb II 
wrote:

> > Marc Nozell wired up a camera with a mechanical release, using Arduino
> > and then converted the resulting .JPGs into videos:
>
> I forgot he did that, I should look into it.
>
> ​
> Richard Kolb II
>
>
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>
>


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Re: Linux for time lapse and wifi?

[Ted Roche]

Also, gphoto2 is a cool commandline tool to capture pictures from USB
cameras. I played around with this for a wildlife capture camera using
an old digital camera we had. Of course, you need a power supply for
the camera as well as the computer.

http://gphoto.org/doc/manual/ref-gphoto2-cli.html

On Wed, Jun 28, 2017 at 8:51 PM, Richard Kolb II  wrote:
>> Marc Nozell wired up a camera with a mechanical release, using Arduino
>> and then converted the resulting .JPGs into videos:
>
> I forgot he did that, I should look into it.
>
> Richard Kolb II
>



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Ted Roche & Associates, LLC
http://www.tedroche.com
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Re: Linux for time lapse and wifi?

[Richard Kolb II]

> Marc Nozell wired up a camera with a mechanical release, using Arduino
> and then converted the resulting .JPGs into videos:

I forgot he did that, I should look into it.

​
Richard Kolb II
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Re: Linux for time lapse and wifi?

[Ted Roche]

On Wed, Jun 28, 2017 at 10:31 AM, Richard Kolb II
 wrote:
> Hello all,
>
> I'm looking into using a pine a64 running ubuntu mate to setup a time lapse
> photo using a standard digital camera controlled over USB. I haven't done a
> ton of research into it yet, but I wanted to see if anyone else has done
> something similar and had some advice/opinions

Marc Nozell wired up a camera with a mechanical release, using Arduino
and then converted the resulting .JPGs into videos:

http://blog.nozell.com/2013/02/sony-alpha-100-dslr-shutter-control.html

and

http://blog.nozell.com/2012/12/time-lapse-photography-using-arduino-to.html


-- 
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Ted Roche & Associates, LLC
http://www.tedroche.com
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Re: Linux for time lapse and wifi?

[Tom Buskey]

On Wed, Jun 28, 2017 at 10:42 AM, Ken D'Ambrosio  wrote:

> On 2017-06-28 10:31, Richard Kolb II wrote:
>
> > I'm also thinking about using it as a wifi access point, the location
> > that it'll be installed, a remote house in Maine, will have a dsl
> > connection, but right now I don't have a wireless router, and since I
> > have this handy I thought I'd take advantage.
>
> I set up my RasPi 3 as a WAP, and I have to say, it just didn't work
> that well -- egregiously slow, and low power to boot.  I guess the
> system is underpowered for the task, based on the reading I did.  I'd
> have to recommend using a stock WAP to make that happen -- bet you could
> find one for $15 on Craigslist or something.
>
>

People bought lots of the Linksys routers back in the day.  They should be
out there.

I find myself avoiding wireless as much as possible.  If I can run a wire
to the Roku, security cam, raspberry pi doing what it does, the sprinkler
controller, the printer, I will.  No bandwidth contention,  no outdated
security, no dead spots.  I need to run power to the device anyways.

Some people might not be able to run network cables everywhere of course
and some devices (tablets) can't be wired.
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Re: Linux for time lapse and wifi?

[Tom Buskey]

On Wed, Jun 28, 2017 at 10:53 AM, David Rysdam  wrote:

> Ken D'Ambrosio  writes:
> > On 2017-06-28 10:31, Richard Kolb II wrote:
> >> Hello all,
> >>
> >> I'm looking into using a pine a64 running ubuntu mate to setup a time
> >> lapse photo using a standard digital camera controlled over USB. I
> >> haven't done a ton of research into it yet, but I wanted to see if
> >> anyone else has done something similar and had some advice/opinions. I
> >> was thinking of setting this up first as a way to capture an event
> >> going on, and second as a wildlife/security camera.
> >
> > Well, I bought the Pinebook, and -- given its price, among other things
> > -- seems like it would do a fine job using its webcam.  But if you want
> > high quality stuff, I suppose a "real" camera is the way to fly, and not
> > a webcam (be it part of a Pinebook or something external).
>
> I've been wanted to do some OpenCV projects, so I looked into
> webcams. You can get 1080p for under $50 now. Plug and go in Debian
>

Shawn Powers (The editor of Linux Journal) has had a series in the magazine
on his backyard bird cam.  Here's one of the articles
.  I think
he's been doing OpenCV too.
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Re: Linux for time lapse and wifi?

[Joshua Judson Rosen]

On 06/28/2017 10:53 AM, David Rysdam wrote:
> Ken D'Ambrosio  writes:
>> On 2017-06-28 10:31, Richard Kolb II wrote:
>>> Hello all,
>>>
>>> I'm looking into using a pine a64 running ubuntu mate to setup a time
>>> lapse photo using a standard digital camera controlled over USB. I
>>> haven't done a ton of research into it yet, but I wanted to see if
>>> anyone else has done something similar and had some advice/opinions. I
>>> was thinking of setting this up first as a way to capture an event
>>> going on, and second as a wildlife/security camera.
>>
>> Well, I bought the Pinebook, and -- given its price, among other things 
>> -- seems like it would do a fine job using its webcam.  But if you want 
>> high quality stuff, I suppose a "real" camera is the way to fly, and not 
>> a webcam (be it part of a Pinebook or something external).
> 
> I've been wanted to do some OpenCV projects, so I looked into
> webcams. You can get 1080p for under $50 now. Plug and go in Debian
> 8. (I actually bought 720p for $30, but had to do it twice because the
> first time I got one that was for video chat and didn't autofocus.)

Huh--the last time I had  a problem like that, it was exactly the opposite 
issue:
I go one that was meant for video chat and _did_ autofocus--continuously,
based on what it thought was the most interesting bodypart in the image
(I guess; I've heard that some of these things try to do face-detection and
 just fail miserably if they can't find *a hairline* or other
 popular facial features...).

> Obviously you can use a video cam for snapshots too, so this might be a
> good way to go.

Not-so-obviously..., it depends:

Some video cameras have frame exposure-times etc. that work fine (or even work 
*well*)
for video because of how noise and motion-blur generally are neuroprocessed
in moving images..., but then produce unsatisfying stills in the many situations
where motion-blur etc. are undesired.

Also the `rolling shutter' with CMOS sensors can easily lead to other awkward
visual distortions, e.g.:


https://en.wikipedia.org/wiki/Focal-plane_shutter#/media/File:Bundesarchiv_Bild_183-1991-1209-503,_Autorennen_im_Grunewald,_Berlin.jpg

YMMV--depends greatly on your subjects.

-- 
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Re: Linux for time lapse and wifi?

[dennis]

Does the camera show up as a regular video device? 
For a while I was using motion on a raspberry pi b with a webcam. Motion has a lot of options if you dont mind reading the docs and writing a text config.  It can  save images/video on movement and/or on a timer. It's also able to execute a script when an image is saved and has a basic web interface to view the cameras.  And its fast enough for slow hardware. 
- Dennis
Sent from BlueMail 
On Jun 28, 2017, at 10:31, Richard Kolb II  wrote:
Hello all,I'm looking into using a pine a64 running ubuntu mate to setup a time lapse photo using a standard digital camera controlled over USB. I haven't done a ton of research into it yet, but I wanted to see if anyone else has done something similar and had some advice/opinions. I was thinking of setting this up first as a way to capture an event going on, and second as a wildlife/security camera. I'm also thinking about using it as a wifi access point, the location that it'll be installed, a remote house in Maine, will have a dsl connection, but right now I don't have a wireless router, and since I have this handy I thought I'd take advantage.Thanks,Richard Kolb

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Re: Linux for time lapse and wifi?

[Mark Komarinski]

I'm not near my system to look at it, but OctoPI drives 3D printers and it has 
time-lapse camera recording.  I think it uses an external app to do that but 
it'll take the snapshots and assemble them into a movie.  You can also get a 
live feed via the network.
(Sorry for top-posting, mobile)
 Original message From: Richard Kolb II 
 Date: 6/28/17  10:31 AM  (GMT-05:00) To: GNHLUG 
 Subject: Linux for time lapse and wifi? 
Hello all,
I'm looking into using a pine a64 running ubuntu mate to setup a time lapse 
photo using a standard digital camera controlled over USB. I haven't done a ton 
of research into it yet, but I wanted to see if anyone else has done something 
similar and had some advice/opinions. I was thinking of setting this up first 
as a way to capture an event going on, and second as a wildlife/security 
camera. 
I'm also thinking about using it as a wifi access point, the location that 
it'll be installed, a remote house in Maine, will have a dsl connection, but 
right now I don't have a wireless router, and since I have this handy I thought 
I'd take advantage.
Thanks,
Richard Kolb

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Re: Linux for time lapse and wifi?

[David Rysdam]

Ken D'Ambrosio  writes:
> On 2017-06-28 10:31, Richard Kolb II wrote:
>> Hello all,
>> 
>> I'm looking into using a pine a64 running ubuntu mate to setup a time
>> lapse photo using a standard digital camera controlled over USB. I
>> haven't done a ton of research into it yet, but I wanted to see if
>> anyone else has done something similar and had some advice/opinions. I
>> was thinking of setting this up first as a way to capture an event
>> going on, and second as a wildlife/security camera.
>
> Well, I bought the Pinebook, and -- given its price, among other things 
> -- seems like it would do a fine job using its webcam.  But if you want 
> high quality stuff, I suppose a "real" camera is the way to fly, and not 
> a webcam (be it part of a Pinebook or something external).

I've been wanted to do some OpenCV projects, so I looked into
webcams. You can get 1080p for under $50 now. Plug and go in Debian
8. (I actually bought 720p for $30, but had to do it twice because the
first time I got one that was for video chat and didn't autofocus.)

Obviously you can use a video cam for snapshots too, so this might be a
good way to go. No need to worry about powering both the camera and the
Pine.
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Re: Linux for time lapse and wifi?

[Ken D'Ambrosio]

On 2017-06-28 10:31, Richard Kolb II wrote:
> Hello all,
> 
> I'm looking into using a pine a64 running ubuntu mate to setup a time
> lapse photo using a standard digital camera controlled over USB. I
> haven't done a ton of research into it yet, but I wanted to see if
> anyone else has done something similar and had some advice/opinions. I
> was thinking of setting this up first as a way to capture an event
> going on, and second as a wildlife/security camera.

Well, I bought the Pinebook, and -- given its price, among other things 
-- seems like it would do a fine job using its webcam.  But if you want 
high quality stuff, I suppose a "real" camera is the way to fly, and not 
a webcam (be it part of a Pinebook or something external).

> I'm also thinking about using it as a wifi access point, the location
> that it'll be installed, a remote house in Maine, will have a dsl
> connection, but right now I don't have a wireless router, and since I
> have this handy I thought I'd take advantage.

I set up my RasPi 3 as a WAP, and I have to say, it just didn't work 
that well -- egregiously slow, and low power to boot.  I guess the 
system is underpowered for the task, based on the reading I did.  I'd 
have to recommend using a stock WAP to make that happen -- bet you could 
find one for $15 on Craigslist or something.

$.02,

-Ken
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