"Bullet Time" with the Chronos high-speed camera-----make money online

today on Applied Science I'm going to

talk about high-speed cameras and this

interesting motion control rig that I

built this is the Chronos 1.4 camera

which is brand-new and just launched on

Kickstarter and what's interesting is

that it's a wireless high-speed camera

so it's still running and I can swing it

around on this motion control rig and

put something interesting at the point

of rotation in the center here and

capture sort of a matrix

esque bullet-time effect so let's take a

few minutes and look at some footage

that I collected and then after that

we'll get into the details and the

challenges I faced in building this

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pretty cool right

this camera is actually pushing the

state of the art forward in a lot of

ways one of which is price so if you've

seen a really popular high-speed camera

video channels on YouTube those cameras

can cost like $100,000 or more and so

the price of this is actually what it

costs to rent one of those high-end

cameras and in addition this is

completely battery powered you can just

put this in your backpack and go

somewhere and it's also highly featured

I mean it has an external trigger and

all kinds of other stuff I'll put a link

in the description do some better like

full-on product reviews I'm mostly going

to talk about how I use this to get the

shots that you just saw let's talk about

the mounting for the rotation platform

first as you can see the steel pipe is

connected to the ceiling joist there and

the microphone stand in the middle is

just along for the ride I'm not using it

right now and I welded the steel pipe to

a steel plate here and then use these

guy wires to support the other ends of

it so it's actually a pretty good

mounting solution and the reason I did

it this way is so that I could put all

of the stuff that I'm going to need

lighting and all the setup for the

high-speed scene on the table and there

wouldn't be anything to get in the way

so I can put my hands through here and

there's no like supports or side rails

or anything that would get in the way in

addition I can crank this tabletop up

and down so I can position the thing

pretty easily just by cranking the table

up and down the motor is a USB

configurable and controllable servo

motor made by a company called Technic

and it's a quite an interesting little

device this is actually about a thousand

Watts peak power in this tiny little

package here and there is no other

controller this just goes to a DC supply

and everything is done over the USB link

or or it has an exhilarating AK the

reason that this is useful in this

project is I can select any speed I want

from you know one rpm all the way up to

4000 and I can control it very I can

control the acceleration and

deceleration rates very smoothly so that

this thing doesn't try to rip itself

apart the camera with the lens weighs

about a kilo and a half so this thing

actually has quite a lot of rotational

inertia

and it's heavy enough where balance of

course was a big problem so I've cut a

kilo and a half of steel on this side to

balance the rotor and interestingly I

was expecting this to have problems I'm

spinning at about a hundred rpm for most

of these shots and I was expecting

imbalance to be a big issue and I was

going to have to you know maybe use

little washers and stuff and stack them

up to get the balance just perfect but

it actually ended up not being much of

an issue and the other reason that I

used a counterweight like that is to get

it dynamically balanced so besides being

stationary if you tip this on its side

static balance means that the thing

won't go side to side because the rotor

has the same weight on either side of

the axle but you also also have to worry

about dynamic imbalance so if the 1.5

kilo center of mass is down here for the

camera but it's up here for the

counterweight then when the thing gets

spinning it's going to have unequal

forces as it spins and so I was hoping

that this would even be the same and as

it turns out this thing is pretty good

if you used high-speed cameras you'll

know that the way they work is you start

them recording and then you you know

leave them recording for quite a while

I've got the red light on and your event

will take place and then you hit stop

and so it's it sort of records the

previous five or ten seconds of video

footage and so what you need to be able

to do is press the stop button after the

action has happened of course if this

thing is whipping around at 100 rpm I

can't really get to the button so the

solution that I have for that is to

start it recording get it spinning

around and then I have this wireless

trigger shutter release that I got on

Amazon it's like a twenty or thirty

dollar product so I press the button on

the remote we can see we're no longer

recording here and it saved the last

five or ten seconds of video

conveniently the Khronos has an external

trigger input that's very configurable

so I I just fell crowed on the receiver

this wireless thing and hooked this up

so that way I can stop the action while

the thing is still spinning and then

slowly spin it down controllably

and I'll have my footage

let's talk about lenses for just a sec I

think the standard lens that comes with

the Chronos is this zoom lens seamount

and it actually has quite a zoom range

it goes from 12 and 1/2 millimeter up to

75 which is the biggest zoom range that

I've seen for a seamount lens it's a

little heavy though and so for this

motion capture rig I was concerned that

it might be a little too much this whole

thing is kind of was it actually worked

out pretty well but I was worried that

weight was going to be an big issue so I

got this 25 millimeter lens which is a

very convenient inexpensive size for

seamount

and then also got a 12 and 1/2

millimeter so here's what this thing

looks like in action the first step is

to set up the scene and when everything

is ready I'll turn around and use the

laptop to start up the motor and I have

it set to a very low acceleration rate

just because there's no reason to to go

faster it's kind of nice to have

everything controlled and once the motor

is up to speed I'll kind of carefully

get my head next to it so that I can

reach in and trigger the scene and you

know switch the light on if I need to or

not and at the same time I'm pressing

that wireless remote control so that I

capture the video at just the right time

after the motor slows down I can look at

the playback on the back of the camera

and decide if that was a good shot or

not and if it is you can do mark in and

mark out points on the 5 or 10 seconds

of real-time footage that I captured and

then save it as an mp4 to the to the SD

card for lighting really small objects I

found out that these little IKEA lamps

that I like for everything are okay if

they're not they're not super bright but

for doing really small objects you can

get the light source really close to it

and that tends to work out just fine for

bigger objects I'm using a 650 watt

halogen light and it's a little bit of a

problem because it's so hot of course so

much of the energy that comes off as

heat you should check out the creator of

this Kronos 1.4 camera David Cranston

has actually built the largest LED lamp

I guess in history he's in the history

of high speed video and he has a pretty

cool right up on that so for next time I

also have this linear actuator that I

got on eBay and this is a belt drive not

a lead screw type so that if I turn the

input shaft you actually get quite a lot

of movement on the carrots there and

what I'm going to do is connect that

servo motor to the input here and then

control it from the servo control

program there and of course I'm going to

mount the high-speed camera on this so I

can you know rack it will pump really

fast in a prescribed fashion maybe even

tip this thing vertically so that I can

pour water and stuff and let gravity

accelerate it and then have the camera

you know chase it down or even you know

go faster than gravity or all kinds of

stuff that's going to be pretty good and

yeah I hope you enjoyed it and I will

see you next time bye earn money online by clicking, online money income site, money earning sites, online earning sites, best website to earn money, free money earning sites, money earning websites, get money online, online earning tips, online earning without investment, earn money online without investment for students, earn money by clicking ads, earn money online without investment, online earn money website, online jobs to earn money, best online income site, top 10 online money earning sites, easy income online, easy online earning, earn money online from home, make money online legit, earn money online free fast and easy, online earning websites list, genuine online money earning sites, online work to earn money, online surveys to earn money, earn money through internet, best online income, earn money online data entry, easy ways to make money online, best online earning websites