LightBurn Demo 13 – The Camera

0:00 one of the things that gets asked

0:02 frequently in the forums about lightburn

0:03 is why do we keep mentioning the

0:06 camera what do you need a camera for

0:09 what do you use a camera for how does

0:10 lightburn work with a camera to give

0:14 you a demonstration of what you can use

0:16 the camera for in lightburn let’s

0:19 imagine that you have a five or six year

0:22 old child who is obsessed with Star Trek

0:25 and they like to draw so your

0:30 five-year-old comes to you and hands you

0:33 a picture that looks like that and you

0:38 think to yourself wouldn’t it be fun to

0:39 do something with this with my laser

0:41 so you open light bar

0:45 after having the camera calibrated in a

0:48 line which we will talk about in a

0:50 separate video

0:51 you go to the camera control window and

0:54 with your drawing placed somewhere on

0:56 the laser bed you click update’ overlay

0:59 lightburn has taken this snapshot view

1:02 of the bed of the camera are sorry of

1:05 bed of the machine and unwarped it so

1:09 it’s removed all of the fisheye

1:11 distortion and turned this drawing into

1:15 a backdrop in lightburn and now with

1:18 that backdrop in lightburn from the

1:20 camera control window you can click

1:22 trace if you adjust your thresholds

1:26 accordingly I’m going to zoom in here on

1:30 the drawing it actually looks like it’s

1:32 pretty much good to go right from the

1:34 beginning click OK

1:35 I’ve captured that background now I’ve

1:39 captured a bunch of other crap with it

1:40 that I don’t want however that’s

1:43 relatively easy to deal with I’m going

1:46 to with this selected ungroup

1:51 select everything

1:54 and then use the ctrl key with shift to

1:59 unselect these things in the middle hit

Video Transcript for Lightburn Camera Features (Cont…)

2:02 the Delete key and now I have just the

2:06 drawing I’m going to regroup these back

2:08 together if I turn the backdrop back on

2:12 you can see that this now lines up quite

2:14 well with my background now I could just

2:17 cut this out of the paper that I have

2:20 here already and that would work what

2:25 might make more sense would be to take

2:27 this and maybe do an offset around it

2:32 something like this and cut out the

2:34 offset so that you know we have this

2:36 design sitting on the piece of paper and

2:38 that would work too but I’m going to try

2:41 something a little bit more fancy going

2:45 to

2:46 my capture window again just so that you

2:48 can see what I’m doing

2:53 so I have a coaster it’s made of slate

2:58 or something I’m assuming I got it at a

3:02 home store like Target I’m going to

3:07 adjust my focus and burn this image onto

3:11 that slate so back to my camera control

3:15 window update the overlay you can see

3:20 the co-star sitting there next to my

3:21 design if I take this

3:27 move it over going to make it just a bit

3:32 smaller

3:41 roughly centered

3:45 go over to my cut window choose speeds

3:48 and powers that are appropriate

3:54 probably want

3:56 interval a little

3:59 let’s do 200 millimetres a second

Video Transcript for Lightburn Camera Features (Cont…)

4:03 sent power

4:07 to scan all shapes at once

4:10 it okay have a look at my preview

4:13 preview looks good I’m going to close

4:18 the lid burn this

4:30 something you’ll also notice is that

4:33 it’s possible to use the camera

4:35 controlled view to monitor the job in

4:38 the laser this is actually the same

4:41 camera that I have mounted inside when

4:44 my lid is open the cameras looking

4:46 straight down when my lid is closed the

4:48 camera is looking across the bed so it’s

4:51 still useful even when the lid is closed

5:18 and so I just updated the overlay and

5:21 now you can see if I turn off the fade

5:27 the vectors are our design and the

5:32 the white in behind it is actually what

5:35 was just cut onto that coaster by

5:39 said this not to show you can see the

5:42 alignment is pretty good

5:44 that’s probably within a half a

5:46 millimetre and to be clear my laser lid

5:52 wobbles a little bit when it’s up and

5:54 they currently have a light mounted to

5:56 it to get this view a little better so

5:58 it’s throwing the calibration off just a

5:59 touch but this is relatively normal and

Video Transcript for Lightburn Camera Features (Cont…)

6:04 actually quite good

6:11 and there with my hands touching the lid

6:14 to compensate for the weight of that

6:17 lamp you can see that the alignment gets

6:20 quite a bit better but even moving the

6:21 lid just a little bit affects the

6:24 overlay alignment a fair amount so it’s

6:27 important to make sure that your lid

6:29 stops are fixed your camera is mounted

6:32 in a continuously fixed location where

6:34 you may need to calibrate again once in

6:36 a while