Hello everyone,

I'm looking for this set : PT785-S. ( http://www.servocity.com/html/pt785-s_pan___tilt_system.html ) It's a pan and tilt system, i will control it with an arduino.

The thing is that servocity seems to stop to sell this kit, and have a new one who is more more expensive ( because they had joystick controller, ...). But i only need the basic system.

My question is : Is there someone who know where i can have one ? If it's a second hand i'm interested too !

Or maybe, someone know a better system ? I cannot put a lot of money on it because i'm student.

I want to plug a DSLR camera on it ( about 1kg ) so maybe the SPT200 from servocity can handle it. Does someone have an experience on it ?

Thanks a lot

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Hey Matey

you need to check this website out. They are fantastic and well priced, works with dragon frame. http://www.emotimo.com 

I have the TB3 so check my blog for more info http://www.stopmotionzombies.blogspot.com

Hope this helps

Pete

hello,

 

Thanks for you're answer ! The TB3 look really great.

Does that mean it work directly with dragon ? ( don't need to have an arduino ? )

Otherwise the other cool thing is that you can also use it outside, or for an other purpose.

The sad part is : it's 2 time the price of the PT785 and 3 time the price of the SPT200. So it's not really on my budget

But it will think about it, because the TB3 seems really great.

I saw on you're really cool blog that you plug it on a konova slider. Does that need extra pieces to attach it to a slider? And i'm not sure to have understand that very well, but it seem possible to link a motor to the emotimo ? ( so no need arduino for the slider ? )

thanks.

 

No you don't need an arduino, the arduino is built into the TB3. I had many emails with Brian at Emotimo, he actually sent the TB3 with the Dragon Frame firmware, so all I had to do was plug the USB into the computer, link it to Dragon Frame via Dragon Frame Connections and away I went. Simple as that. 

The TB3 has a hole for attaching it to a tripod. My Konova slide has the same thread so I can easily attach the TB3 to it. You're right, if you buy an extra Stepper Motor, you can plug it straight into the External motor slot on the TB3. So Dragon Frame will read that too without needing to buy an arduino at all.

I intend to buy my motor soon so I can attach it to the slider. Giving me Pan, Tilt and Track. But you could use it for Focus as well

Hope this helps. Glad you like my blog, I try to update every other week

Pete

I'd echo what Pete said here- I bought a TB3 too- and have driven a slider with the spare port successfully- it was used on a 4 week project for Lego  to great success, and was reliable accurate and for our purposes repeatable. I've also experimented with it to produce a few time lapse sequences, which are equally interesting , and for the stop motion addict, curiously liberating-(find scene, set time, shoot)

somehow seems too easy!


For my money, this is a great product and the best option currently for a budget pan/tilt/ track combo...I'd also agree that Brian - the emotimo head honcho- has been very forthcoming and supportive.

No, he's not paying me- I'm just saying- credit where due.

John

Deschaud-

i took a look at the PT785-S. ( http://www.servocity.com/html/pt785-s_pan___tilt_system.html )

and was amazed at the price- but then i looked closer and realised the whole thing was servo driven- not driven by stepper motors- which means this would be fine in the real world, for real time film/video, but would not be suitable for the mathematical accuracy required of frame by frame, curve based stop motion- for that, so far, I have only encountered stepper motors being employed- they will move many fractions of a rotation, and remain accurate.


If I am wrong about the PT785-S, I apologise in advance and ask anyone to please correct me, but that is my current understanding- servo motors would not have the same fractional accuracy.

It is a shame, because it looks beautiful.
John

Yeh I think you're right John. I checked it out and realised they're run on servos. Shame, but maybe thats why it's cheaper? I've sent you a friend request so I can mail you a couple of questions regarding the TB3 and 3rd stepper motor port. You seem to be the only other person in UK with one.

Pete

There is a time lapse expert guy too, but no problem, ask away- i'll answer when the sun has risen- too many damn zombies out at night!


John

Haha, no problem pal

I'll mail you tomorrow. Early start for me. Mouth pieces to make bla bla bla

Pete

Woooh thanks john and peter.
You answer so many question at the same time.
I was aware about the servo motor, but without any experiment on that, i was just "hoping" that will work fine.
( all forum always talk about time lapse not frame by frame )

So, i will certainly not took this option.

You talk about focusing. I was always asking how to achieve that ?
And my first guest would be to put a ruler on my camera...
But you told me that the slot for an other motor on the TB3 can do the job ? How exactly ? Does that require specific zoom ?

Ok, so if you have one of these http://www.amazon.co.uk/Opteka-FF180-Reversible-Digital-Cameras/dp/... you can add a stepper motor and drive the zoom on your DSLR, Dragon Frame has the function to look at the focus and change accordingly while you zoom in

Pete



Peter Ellis said:

Ok, so if you have one of these http://www.amazon.co.uk/Opteka-FF180-Reversible-Digital-Cameras/dp/... you can add a stepper motor and drive the zoom on your DSLR, Dragon Frame has the function to look at the focus and change accordingly while you zoom in

Pete

actually on the original moco thread, one of us posted that the software can actually control the lenses remotely on dslr cameras with motorised focus lenses- ie: auto lenses- there was some discussion as to whether this was correct, but then there was a general consensus it did work- so , if you have a Canon or Nikon with such a lens, it may be possible to control focus without all the follow focus paraphernalia, and keep the 3rd axis for something else...of course, reverting to any auto settings may cause flicker to rear it's ugly head...

i will try and post a link to that thread too.

John

ps just re-read the thread, and think you may be saying the same thing as me too anyway Pete- apologies if so.

found the thread- here is a link:

http://www.stopmotionanimation.com/forum/topics/son-of-motion-contr...

Oh I see, i'll have to look into that, my cannon has the auto feature but i've been having to do it manually through dragon frame peripherals. maybe i've got it on manual instead of auto? unsure.

Cheers for the tip tho

Pete

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