Engineering/photography problem

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adolf
adolf
1862 posts
1862 posts
25 May 2012 6:56pm
I had an idea tonight.

I saw this site: www.magictoolbox.com/magic360/

I'd like to do something like this, its a small part of a masterplan for world domination.

The problem is that I'd need to get an automated spinning susan and a camera and I'd like to automate the process as much as possible - I'd like to have the ability to photograph hundreds of products in a home studio with the same result.

There are 36 images in the example above - each taken at 10 degree intervals.

Below is an example of what I'd like to achieve:

Say I had an automated lazy suzan that I'd put the product on and it rotated once in 6 minutes (360 seconds) and I had a camera that had the ability to take a still photo every 10 seconds - that would give me what I need - 36 photos at 10degree intervals.

Where would I find a lazy suzan device that I could program to spin at a defined speed?

What camera could I program to take shots at defined intervals?

Is there a better way to get the same output - ie video the product spinning and take every nth frame?
decrepit
decrepit
WA
12884 posts
WA, 12884 posts
25 May 2012 7:11pm
If you've got a camera with remote control ability, you could just use sensors where you want the picture. save you all the trouble of getting spin speed and camera timing right.
stuk
stuk
NSW
894 posts
NSW, 894 posts
25 May 2012 9:23pm
Outsource it to Manilla or Bangkok
adolf
adolf
1862 posts
1862 posts
25 May 2012 7:28pm
decrepit said...

If you've got a camera with remote control ability, you could just use sensors where you want the picture. save you all the trouble of getting spin speed and camera timing right.


I'm a bit lost... sensors?

I know very little about camera technology.

What camera has a sensor, and what can the sensor sense?

Are you saying that I could buy a camera that could sense lines marked at 10degree intervals on a spinning lazy susan and I could program it to take a shot at that point?
adolf
adolf
1862 posts
1862 posts
25 May 2012 7:29pm
stuk said...

Outsource it to Manilla or Bangkok


Not possible, I'd never get the products back
Mark _australia
Mark _australia
WA
23682 posts
WA, 23682 posts
25 May 2012 7:51pm
Use an electric motor to drive a belt on the rotating platform.
A potentiometer will get the voltage right and thus adjust speed.

An electronics whizz could rig a crank angle sensor from a car that measures the rotational angle and fires the camera every 10 degree.
Alternately, 36 switches around the outside that fire the camera on contact but that's getting messy
Stuthepirate
Stuthepirate
SA
3591 posts
SA, 3591 posts
25 May 2012 9:29pm
attatch an encoder and 0 degree calibration sensor to the shaft of the lazy susan, Digital/Analog input to PLC using set angle/process variable on the Logic, to send an digital/analog output to camera trigger.
As long as you can set the shutter speed fast enough you could take photos at any predetermind angle/time set up in the PLC logic
GavGav
GavGav
VIC
193 posts
VIC, 193 posts
25 May 2012 10:42pm
Nice shoes adolf, how much?
desertyank
desertyank
1264 posts
1264 posts
25 May 2012 9:17pm
This was posted some time ago;

www.seabreeze.com.au/forums/General-Discussion/Chat/Cheap-and-cheerful-GoPro-time-lapse-pan/?SearchTerms=cheap,and,cheerful

Don't know if you can use something like it, but it's on the cheap if it will work
decrepit
decrepit
WA
12884 posts
WA, 12884 posts
25 May 2012 9:30pm
adolf said...

>>>>

I'm a bit lost... sensors?

I know very little about camera technology.

What camera has a sensor, and what can the sensor sense?

Are you saying that I could buy a camera that could sense lines marked at 10degree intervals on a spinning lazy susan and I could program it to take a shot at that point?


No camera doesn't have sensor, you have to set them up, the camera just needs a remote control input of some sort.
There's all sorts of sensors, light, magnetic, and as Mark says mechanical switches being the most common for this sort of application.

For light you'd have a light source, (perhaps even a laser) focused into a beam, fixed to the susan, with photo detectors at the 10deg intervals. Just a simple circuit to couple all the photo detectors to the camera.
Similar thing with magnets.

Most cycle speedos use magnetic sensors, magnet fixed to a spoke, sensor on the forks, that counts wheel revolutions. you don't need the counting part just the sensor a lot more magnets, and an interface between sensor and camera.

A mechanical switch may be the easiest, you just need activating cams at your 10deg intervals and a simple micro switch, that's also more likely not to need an interface to the camera.

Don't bother going to Dick Smith but somewhere like Jcar may be able to help.
drift
drift
VIC
737 posts
VIC, 737 posts
25 May 2012 11:37pm
Hi Adolf,
This stuff has been around for a while.
We used to do it with cars in an infinate white studio and the cars were put on a giant lazy Susan. This app is ok but there are apps out there that give you 360' vertical movement as well as horizontal- which allows you to rotate the object completely around to see the top and bottom.
In terms of triggering a shutter release with a minor increment of movement, do a web search for Mumford Time Machine Photography. These guys build all sorts of timelapse, micro/ slow motor and trigger mechanisms.
Ted the Kiwi
Ted the Kiwi
NSW
14256 posts
NSW, 14256 posts
25 May 2012 11:51pm
drift said...

Hi Adolf,
This stuff has been around for a while.


Is this what you are thinking Adolf? I saw a more edition / model of this camera recently on line and its even better now - sorry I can not find the link.

adolf
adolf
1862 posts
1862 posts
25 May 2012 10:22pm
No,

but it was a good invention, and I'd love to go back to Tonga. Thanks for the vid all the same.
Hunter S
Hunter S
WA
516 posts
WA, 516 posts
25 May 2012 10:32pm
Pretty sure ImageJ could extract the images from a video of the product rotating - it's free and they get some impressive stuff out of it
FlySurfer
FlySurfer
NSW
4460 posts
NSW, 4460 posts
26 May 2012 1:07am
adolf said...

I had an idea tonight.

I saw this site: www.magictoolbox.com/magic360/

I'd like to do something like this, its a small part of a masterplan for world domination.

The problem is that I'd need to get an automated spinning susan and a camera and I'd like to automate the process as much as possible - I'd like to have the ability to photograph hundreds of products in a home studio with the same result.

There are 36 images in the example above - each taken at 10 degree intervals.

Below is an example of what I'd like to achieve:

Say I had an automated lazy suzan that I'd put the product on and it rotated once in 6 minutes (360 seconds) and I had a camera that had the ability to take a still photo every 10 seconds - that would give me what I need - 36 photos at 10degree intervals.

Where would I find a lazy suzan device that I could program to spin at a defined speed?

What camera could I program to take shots at defined intervals?

Is there a better way to get the same output - ie video the product spinning and take every nth frame?


1.- Old microwave
2.- Your looking for an intervalometer, or a camera that has 1 integrated. A lot of cheap point & shoots have them... Samsung... I'm sure there an app for on too.
3.- Arduino

You know they sell whiteboxes... with manual wheels.
adolf
adolf
1862 posts
1862 posts
26 May 2012 3:24pm
Thanks breezers.

I'm going to get to work on a cheap prototype using:

http://www.ebay.com.au/itm/HLDR4-PWM-DC-Motor-Speed-Regulator-Controller-4A-11-16V-/350409771164?pt=AU_B_I_Electrical_Test_Equipment&hash=item51960cc89c

www.bunnings.com.au/products_product_12v-rotisserie-kit_6116.aspx

and one of these iphone apps:

appadvice.com/appguides/show/time-lapse-photography-apps
Davage
Davage
VIC
182 posts
VIC, 182 posts
26 May 2012 7:47pm
Im a bit simple but why dont you just take a video of the item while it spins? Then it would just be a case of editing the footage. Given the amount of good quality go pro footage on here Im sure some one can point you to the best editing software?
adolf
adolf
1862 posts
1862 posts
26 May 2012 5:49pm
Ted the Kiwi said...

adolf said...

http://www.bunnings.com.au/products_product_12v-rotisserie-kit_6116.aspx


Where are you based? I have one of these sitting in the garage - its a battery powered one - you are welcome to it in the name of science and innovation.


In Melbourne.

PM me if you want to sell it?

I just need the motor and ac adaptor - prefer to recycle.

I'm assuming it's not battery operated.
adolf
adolf
1862 posts
1862 posts
26 May 2012 5:57pm
Davage said...

Im a bit simple but why dont you just take a video of the item while it spins? Then it would just be a case of editing the footage. Given the amount of good quality go pro footage on here Im sure some one can point you to the best editing software?


Yeah, that's what I was thinking originally and I may revisit that idea and just take every nth frame.

I want to make a web app so the output would be 36 images at 10degree intervals. My hurdle was finding something that would spin slowly enough and that I could control - but I think that's now solved.

These type of projects are so much fun to do, when the weather is miserable, stoking the fire, while I'm waiting for the slow cooker to produce some lamb vindaloo tonight - which I got to say smells fantastic.
Ted the Kiwi
Ted the Kiwi
NSW
14256 posts
NSW, 14256 posts
26 May 2012 7:59pm
adolf said...

Ted the Kiwi said...

adolf said...

http://www.bunnings.com.au/products_product_12v-rotisserie-kit_6116.aspx


Where are you based? I have one of these sitting in the garage - its a battery powered one - you are welcome to it in the name of science and innovation.


In Melbourne.

PM me if you want to sell it?

I just need the motor and ac adaptor - prefer to recycle.

I'm assuming it's not battery operated.


Its battery operated and its free......but I live on the Central Coast NSW. I can probably post it down if you can wait a few days
Skid
Skid
QLD
1499 posts
QLD, 1499 posts
26 May 2012 8:28pm
^^^ Ted the Kiwi, you get a green thumb from me for your 'free-cycling', good on ya
adolf
adolf
1862 posts
1862 posts
26 May 2012 7:41pm
Skid said...

^^^ Ted the Kiwi, you get a green thumb from me for your 'free-cycling', good on ya


google is an amazing tool.

When I first got my idea I was thinking this was going to cost me $300+. I was thinking fancy dslr cameras, and major expense digging up a slow motor that I'd be able to control the speed with some precision.

But thanks to all your input and a few hours in front of the google machine, I reckon I'll have something functional next weekend for under $100.

I found this just then, which may do the trick along with the other bits and bobs and an ac adapter I have sitting in a box on top of my wardrobe:

http://www.ebay.com.au/itm/Windscreen-Washer-Motor-Universal-AE210-12-Volt-/380388072840?pt=AU_Car_Parts_Accessories&hash=item5890e55d88

The seller happens to be in walking distance from my home and open Sunday to boot.

Thanks for all your help and especially Ted for your kind offer, but I don't even think it's worth you going into your garage and digging this motor up for me and posting it.

As soon as I get my prototype up and running - I'll post you what I can produce.
Ted the Kiwi
Ted the Kiwi
NSW
14256 posts
NSW, 14256 posts
26 May 2012 10:17pm
Good to hear Adolf......by the way my garage is very clean at the moment - the GF made me clean it last weekend - I could have located it in seconds!!!!

I look forward to seeing your contraption in action. I put together a time lapse setup for the go pro using an egg timer as suggested above and have been blown away by its results.
evlPanda
evlPanda
NSW
9207 posts
NSW, 9207 posts
26 May 2012 11:05pm
1. Buy a light box (or make one)
2. Take photo
3. Put hand in light box. Turn product.
4. Repeat 2-3



You're totally kidding about the motor and stuff, right?
adolf
adolf
1862 posts
1862 posts
26 May 2012 9:35pm
evlPanda said...

1. Buy a light box (or make one)
2. Take photo
3. Put hand in light box. Turn product.
4. Repeat 2-3



You're totally kidding about the motor and stuff, right?


No,

Human intervention means human error.

I'm working towards automation. Picture this scenario.

I put a product in the centre of my lazy susan. I set the lazy susan to spin at 0.83333 RPM using my windscreen wiper motor and this speed regulator. I set up my iphone app, which I learnt can be triggered with sound, to take a photo every two seconds.

At the desired point I'll clap my hand which will trigger the iphone to start doing it's suff - after 72 seconds I should have 32 photos at 10degree intervals - do the maths.

I want to make this so even a backpacker can pump out 50 or 60 products a day; Thanks Anneka for your help today, that wasn't hard - tomorrow you have 70 products to photograph.


Anneka
d1
d1
WA
304 posts
d1 d1
WA, 304 posts
26 May 2012 9:54pm
Done this for work, for taking measurements from a transmitting device at all angles. Used a PC-controlled stepper motor to drive a turntable at the time. If I had to do it now, would use an Android phone to take the pictures and drive the stepper through the USB connector via Arduino. No need for angle sensors or a PC with this approach. Remember to set the camera to manual to ensure same exposure for all pics.
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